Hi there, this is the first time I've posted so bear with me.

I (19F) went on a three week road trip without my (19M) husband. A few months ago go my parents planned a road trip, it was a sort of last "family trip" because I just got married in the fall and my brother is going off to college internationally at the end of the year. My parents offered to pay for everything for us. Meals, tickets, etc. and of course I really wanted to go. Now, I want to state that my parents also offered to pay for my husband's tickets and everything else too, just as they are doing for us. However, he could not join us because he had just taken a bunch of time off work to plan our wedding and go on our honeymoon. He does not have a passport, and it is the busy season at his job right now. My husband had told me that it was OK for me to go, he said he didn't mind sticking around town while I enjoyed a vacation. I was originally only gonna be gone for 2 weeks. And then fly home early. However, my parents told me we were going somewhere I had always wanted to go, and it was in the last leg of the trip. So I decided to stay on the trip for the full 3 and a half weeks. My husband originally said that the change was ok, but now that I'm actually gone he says he is missing me too much. He wants me to book a flight home and he will pay for the tickets to the event that my mom payed for because they are non-refundable. Although I miss my husband a LOT I want to stay the full trip. This is the last trip I might ever get to do with them and I want to enjoy it. This trip had been postponed by a year because my father had gotten blood cancer. I almost lost him and I want to cherish the time i have with him. So, AITAH for leaving on a vacation without my husband and not coming home when I was originally supposed to?

Edit: I knew about the extra week and a half, a month and or so before the trip was happening. I asked my husband several times if he was alright with me going. He said yes. So I told my parents I would stay the extra leg. It wasn't a last minute decision