So for some context my sister and I have never really been that close she is 7 years older than me and has bullied me relentlessly all up until 2ish years ago. I (22 f) and my husband (31 m) were already planning on getting married, but later in the year when we found out I was pregnant. We both decided that we’d move up the wedding date and get married before I gave birth and just have our dream wedding later down the line. The problem started when I was picking out my bridesmaids. I had asked my sister (29 f) is she would be a bridesmaid along with a family friend and my SIL and she said yes. I was genuinely excited and couldn’t wait, but as the date got closer she started putting stipulations on my baccalaureate party trying to accommodate just her, she had also ended up getting sick along with her 3 kids a week before my wedding so I asked her not to come because I didn’t want my guests or I (7 months along at this point) to get sick, long story short she ended up throwing a fit over everything and I ended up not having an actual baccalaureate party due to stress and planning conflicts. My husband decided to just to join our parties though and we spent the night at home talking to everyone (not very exciting and I feel bad because they had a whole thing planned). The real problem started though the day of my wedding everything was perfect up until an hour before I was supposed to walk down the aisle. My MOH couldn’t make it so I ended up having to move people around, but it still was going alright (somewhat). Then came time for me to put my dress on. I wanted to put my dress on 10 minutes before I was set to walk down because I didn’t feel like standing that long in heels and I felt like if I went back any sooner that something was going to happen, but after arguing with my mom for an hour I was practically forced to go back 30 minutes before I was set to walk. It took me maybe 2 or 3 minutes to get into my dress and so I stood there for the rest of the time waiting. I knew something was up though whenever I wanted to stand behind my wedding party for the walk, but I was told that I had to let everyone else walk then I could come out of the dressing room and walk over to the doors to go down the aisle which meant there’d be about a 5 minute gap between the last person to walk down and me. I ended up just going out to the hallway with everyone because that’s dumb and I saw no point in there being a gap like that. As soon as I started walking down the aisle though I saw the reason why I wasn’t supposed to come out yet. My sister had snuck into the wedding and was trying to hide on the grooms side so I wouldn’t notice, but she also had brought her 4 year old daughter and put her in the front row on my side. The entire walk up I was trying not to focus on it, but I could hear my niece the entire time talking and fighting with my mom to get down and run around. I eventually made it to my husband and everything faded away for a second until my niece again talked during the whole thing because she then at that point wanted her mom who was in the aisle taking pictures (which she could’ve done from her seat). We finished up and walked back down the aisle as husband and wife which made me so happy! I kind of just sucked it up and tried to enjoy the rest of the day, but it seemed like at every point she was interjecting herself into everything then she started giving my stuff away like the tiara I wore (yes I’m extra) and the flower girl basket and even the decorations before it was even halfway over, but again I put on a smile and sucked it up. All said and done I had amazing time with the family and friends I did want there and my husband and I have some pretty amazing memories of everything. I was pretty much on cloud 9 being married and everything until a couple days later I started not to feel well. Now I can’t necessarily say it was her fault, but I ended up getting sick and having to spend a couple days by the toilet. I did get better after a bit, but a little over a week I ended up getting the rhinovirus and was super sick, that then ended up turning into bronchitis and I fractured a rib from coughing so much. I was sick with that for about a month and needed to be put on steroids and watched in case I went into early labor. I was told that the bug I had got the first time was just enough to weaken my immune system for me to be able to contract the rhinovirus. So yes I complained that I didn’t want my sister there just in case something like that would happen. I didn’t yell, I didn’t argue, I purely just stated facts and how I was disappointed with her for not listening and getting me sick, but as always she has to be the center of attention and cried to everyone and called me mean then blocked me on everything. I’ve been told by multiple of my family members to drop it and that I should be happy that she even came to my wedding, but again I asked her not to. I’m not sure if I’m just hormonal and being a AH or if my feelings are valid. So AITH?