Not music festival ready!

So we r at a punk music festival all of this week which our close friends r headlining! We have had the tickets for 7 months!!! At 5 weeks pregnant I refused to miss out such an amazing event! However! I am currently sat in our room watching Big Bang theory, tired and sick whilst my husband sits in the bar and drinks with the band members, I feel a bit shit and just kinda wana go home! Feel like I can’t enjoy myself and I’m just gonna ruin my partners week as it’s his last little blow out before we settle right down and plan for the baby! I feel bad for being angry at him! He did check with me and said r u sure ur alright I’ll sit here with u but I’m not gonna force him to hang out in a hotel room with me 😫 I really feel like I should drive home and let him have his week! What should I do?!?