might just be paranoid but…

My husband doesn't even ask me for sex anymore. I kind of chalked it up to the fact that I'm 37 weeks pregnant and he knows I'm uncomfortable. Well he masterbates every night. I'm aware he knows I'm aware he knows I'm not mad. Where I get mad is when he says he going to go poop and shower I know he's going to get off. Whatever, I'm laying in bed on Facebook and I notice he's active on Facebook… umm alright maybe he decided not to tonight then I remember I forgot deodorant so I go into the bath room. He hurrys up and closes down his phone screen and he's hard soooo yeah.... I have sent him a shit load of nudes and a couple of videos whys his ass up on Facebook? And even if he is looking at me whys he closing his phone screen down... who is he looking at that he's afraid of me seeing… I don't want to think my husband is getting off to not just other women but other women we personally know… what would you guys do? And even if he is looking at other women what should I do… he's not physically having sex with them... that I know of. But especially if it is someone we know personally to me it's like he's fantasizing about them and finding them more sexually appealing than me.... so in my mind in a way it is cheating.