Fiance and training.

I'm so worried guys. I have no one to talk to. I'm sure no one will comment on this and if they do it'll be negative but here goes. 
My fiance of 3 years is in AIT now. Just got there. I was talking to alot of military men I know who all started laughing amd clapping when I told them he started there. I asked why and one of them responded 
"After 3 months of Basic, your horomones are raging because of the no physical contact and now you have 100's of girls around you. All you have to do is find one." 
The other then said 
"Yeah i knew a bunch of men who fell in love there. One girl got pregnant and got kicked out. A few men were married and cheated." 
Then the last man said 
"People have sex ALL the time at AIT. There are some people that get married before AIT even ends. So watch out because it'll be crazy there. It's basically just a place to teain, then have sex."
I'm so worried now. Yes I trust him but.. After hearing that? I also know how he is. He has cheated before. A few years back, when we were in the worst place ever. A had also cheated too. I kissed another man. He however, never had any physical contact. He flirted, got pictures, talked sexual. Even talked about meeting up but when it came to it, he didn't do it. 
We worked over that as I did it too. We are now engaged, getting married 2 months after he comes home, and i'm 9 weeks pregnant. 
He told me he would never have sex there because he has more respect for his uniform than those who do, because while in uniform you arent supposed to show any affection whatsoever. But I heard his AIT camp is laid back and you arent in uniform all the time. Even though i trust him.. Im terrified. I overthink everything as it is. Now i have these pregnancy horomones i cant control. I dont know what to do. Im so scared. 
Sorry for the rant. I know i probably seem really insecure and usually im not but all that got me paranoid.