Opposite sex

I got very emotional yesterday one of a handful of times since I've been pregnant had a sobbing fit. In my and my husband's five year relationship never have we hung out with the opposite sex. At least not without their so or a group of ppl around. It's just not something we do I know many relationships do and get along just fine but ours just thats not been a thing. Anyway we recently moved and I'm 5 months pregnant with twins been busting ass to try to do everything we need done. I cook I clean I do dishes and laundry I was put on a lot of restrictions with this pregnancy and have been asking my husband for weeks to help me with our room and moving a few heavy things for me. He's been very blah lately very grouchy with me so I haven't been asking much. He instead of helping me last night get some clothes put up went to his friends house a few houses down to get some smokes off his friends gf. he was down there a couple hours I tried to call and ask him to come back but no answer. So I waited till our 7 yr old passed out and walked over to find him just chatting and having a good old time visiting I told him I couldn't reach him I been picking up all by myself it's time to come home. He followed me immediately out the door saying he was sorry the ring volume was off he didn't know I called and that he sat down there so long. Thats when the sobbing started. I told him I can ask all week for something and it still not be done but he can find time to just go hang out with her. I told him I wasn't comfortable with him just going and hanging out with another woman like that and that if I hung out by myself with a guy he'd be hurt. Doesn't help that she tells me all the time just how awesome my husband is and that she wishes her bf was like him. And that my husband had told me he'd wanted to get with her in the past when they were kids. I to my knowledge am the only person my husband hasn't ever cheated on. He nor she have truly gave me a reason to not trust them but this has really bothers me and as I said this has never been something that's happened before or that I've had to deal with with him. We just don't and have never been ok with chilling with the opposite sex alone either of us. I dunno maybe it's just stress and hormones causing the amount of hurt I am or maybe I'm just crazy. Like I said I know others do things like that and have one on one visits with the opposite sex and it works out fine....this all makes me so upset I hate crying so I'm getting even more upset at myself