Forced to wait .. I need advice

Sorry a little long but I need advice please.. 
Hi, my husband and I are newly married, together for 7 years, we just turned 24 couple days ago, not "trying" to conceive but aren't doing anything to prevent it. And I was very happy about that. In the beginning, my husband was set on not having babies for 2 years at least, I finally accepted that, then all of a sudden he tells me it's ok for us to get pregnant, I was over joyed! ❤️❤️ and then..
about two months ago our friends told us they were going to a sandals beach resort and asked us to come along for fun. My husband really wants to go mainly because his best friend is going. If you've never been to a sandals, it's very much a couples vacation and drinks galore. We are booked to leave in July, which is about 10 months from now. My issue is, I don't want to get pregnant and leave my new 1 month old baby home with anyone while I go on vacation. To me, it's just a motherly instinct and obviously I want to be there for my new child, it feels selfish to leave the baby at home. And I also think it's because I was first told I had to wait two years, then told I could have a baby, and now it's back to having to wait.. 
 I will probably end up being "that mom" that is scared for my baby to be alone with anyone other than myself..which I'll eventually learn its ok as with all moms do. But I also want the chance to learn and not
Feel forced to learn because of this vacation. If we were to have the baby, we would have to leave the baby with my mother in law, not that I don't trust her, but her house is just too chaotic for a new baby to be staying at without me especially for 7 days. Lots of pets who are not trained and two teenagers who don't listen. I feel as though it's been too long since she's taken care of a baby and that if something were to happen, we would be way to far away and helpless at that point to Do anything. 
I told my husband that I felt like now that we are going on this trip, I feel forced to wait to have a baby. Which has been my life's dream. I've always told him God created me to be a mom. When I told him this he says to me, "well sorry for trying to take u on a nice vacation". 
And when I tell him that it's because I don't want to worry about the baby, and something I was told I could start trying for, now I have to put it on hold. "He says "if we do get pregnant this month baby will be fine at my moms, he/she won't even remember that we were gone Because it'll be too young" 
To me that's not the point, the point is I dont want to leave the baby alone during its first month or at all for that matter" 
The problem is, I don't think we would be going had his best friend not invited us..my husband just doesn't plan trips like this so that's how I know.
I definitely can't get pregnant before we go on the trip. And I don't want to be pregnant there because I'll miss out on fun things like snorkeling and scuba diving beings they really don't let u do that while pregnant. But if I am pregnant this month or next and leave the baby with my mother in law, I'll be worried sick everyday until we make it home, and I won't enjoy myself. The last time we went to the sandals resort there was no phone service, just Internet, and you would be lucky if you could send a quick text via wifi. 
So far I have tested negative for pregnancy.. But it makes me so sad that I can't get pregnant..until after 10 months. And it makes me sad that if i do, we would have to leave the baby in a home that is potentially dangerous for a new baby.. 
My husband and I both agreed that we would stop Having babies after 30 for our own reasons. 
 Please I need advice on how to talk to my husband