Now I know my husbands gut and your babies gut are two different things, but let me share a story with you.
I used to pack a lunch for my husband. On days I knew it was going to be hot, I would pack him things that would keep in the heat of his van, like PBJ and pretzels or the like. One MONDAY, I asked him if he had a chance to eat lunch that day, as I knew they were busy. It was super hot after a major cooling trend the week before. He said yes, but it was tough as it was so hot, his TURKEY sandwich was a bit warm, so he just held his breath and wolfed it down, since he knew if he didn’t eat it, he would hear it from me later. (I HATE wasting food!)
TURKEY SANDWICH!?!?!?!?! I didn’t pack you a turkey sandwich!!! I packed you PBJ since I knew it was going to be near 90 today! He says, well it was turkey in the bag, with cheese. UMMM, That is what I packed you LAST FRIDAY!!!!! You mean to tell me you ate a sanwhich that had been sitting in your truck ALL WEEKEND in 85-90 degree heat?!?!?!? EWWWWWWWWWWWW He goes to his truck, sure enough, there is the bag (plastic grocery, so they always look the same) with the PBJ sandwhich in it. He turned GREEN. But not cuz he was sick, just from the thought of what he had done to himself.

That was 7 years ago I think. Hes just fine.