I'm ready to leave my husband over these females!

So my soon to be ex has been acting really weird lately like he's hiding something! He tells me to check his phone & there's nothing to be found at first! I was so relieved! Then when he asked if I found anything & I said no he got real smug about it! So I dug a little deeper. In the past month he unfollowed 3 females that posted pictures that left NOTHING to the imagination!! I seen more boobs & ass than I would at the club! So I check who he's following & there's 32 more like this! So my mind goes to he lost interest in those 3 & keeping the others. I do a little snooping & see 18 of the 32 have messages sent. But he deleted them from his messenger so I can't see what they said, when they were sent, or if they were from before we got together & he's just now cleaning them out. Well by this time my mind is racing & my hormones are out of control. To add insult to injury I am over 200lbs & ALL but 2 of these 35 females are skinny like 120lbs max. So it makes me feel like I'm too big for him, ugly, don't do it for him anymore! I'm 9 weeks pregnant & SUPER emotional! Am I jumping to conclusions or do I have reason to be upset, pissed, & hurt?? Can he really be cheating like my family accused him of for the first year of our relationship? I can't talk to him about it until Dec 17th because he's out of town. And I'm not having this conversation over the phone!!!

Edit

When I wrote this I had just found all this! So I reacted purely off emotion. My family thought he was cheating cause they could not see his friends list so he was hiding something! But, he had it set up that I could see it! I had all his passwords & access to all his devices!He deleted all females who were not family or long time friends. He deleted the messages & everything. He wanted me to know he was serious about us because my ex was abusive & cheated A LOT on me! He was trying to help me through it. First relationship after my ex. So we worked through all that or so I thought! Cause my first thought when I seen that was OMG they were right! It was like they were in my head not me. My family like him but, don't like him cause since I got with him my no's mean no & they can't guilt me into helping them. My mom feels since I'm the only girl I should bend over backwards for her. And if mom gets upset with someone so does the rest of the family! I'm feeling so many different thoughts right now. I'm just trying to make sure I'm not making a sound decision & not over reacting