Cheating boyfriend [27M) I am [26F)

My bf and I have been together for 5 years on and off, right now we are long distance and we are always talking to each other and have eachothers location. Last year he went to Colombia with his friends and cheated on me, the dumbass really recorded the whole thing. I went through his phone and found the videos I was so mad but still stayed… on new years he told me he had a trip to Brazil and is going to Carnival Rio, I was so upset I threatened to leave this time and he said he wouldn’t go cause he don’t wanna break up. He went back home and his behavior changed, he was being short, distant and eventually told me he is going to go. He going by himself without his friends which is weird. I kept bringing it up how uncomfortable I was feeling. He would just stay quiet, he left on the trip a week ago and I blocked him on everything. He made a new ig and messaged me on Valentine’s Day but I just feel like he cheated on me in Brazil and I feel stupid for staying… did I mention I’m 6 weeks pregnant from him.