Am I crazy or selfish?

So my husband's best friend is getting married 3 weeks before my due date (12/15) and my husband is supposed to be the best man. I've already had a discussion with the best friend's fiance about what they planned to do if we weren't able to make it and she told us that her brother was going to be a stand in groomsmen with no issue if needed. They are SUPER excited for us and 100% understanding. After the first weekend of November, my OB wants me to limit travel and not go very far. So 6 weeks pre due date. Understandable right? They moved my ultrasound from 36 weeks to 32 weeks because she thinks I might not make it that far with the issues I've had lately. I brought up to my husband that if I haven't had the baby by then, I personally don't feel comfortable with him leaving me here by myself to travel 5 and a half hours away to a wedding where he potentially might not have phone service... Especially if I'm dilated to anything at that point too. We moved 6 hours away from family and I would have no one here with me if I already had the baby or if I went into labor... His mom said well I hope he can go, can't someone stay with you? And I'm like uhhhhh who? I have no one else. what am I supposed to do if I go into labor while he's gone and then he has the potential of possibly missing his first and possibly only child's birth? He's the only person that will be in the room with me. It just doesn't sit right with me. I don't want him to miss the wedding but I don't want to be alone and possibly go into the labor and have the baby without him here either. To note, the best friend WILL be visiting us in January because his wife's brother is getting married in a town 30 minutes from us and we planned to share our special anniversary wine we got in Italy with them and cook a nice dinner to celebrate, plus they'll get to meet the baby. If me possibly going into labor wasn't something to worry about, I'd tell him to go without me with no problem! But it's not looking very promising at the moment. I just don't understand how or why his mom would even suggest it's fine and that he should go and someone just stay with me. Literally all of our friends will be at that wedding too. 😅