feeling stress out

bii
hey everyone I'm putting this up here on G** to see if I get any advice plz no judging... me and my husband been together for 12 years this past summer I found out he was having a fair I decided to give it another try after the whole mess we went on vac I think that's when I became pregnant, but now I have a fear on him talking or seen this girl. he has change alot he did a 360 things he's being good I try my best to not bring the past Cuz after all it was me the one that decided to give him another chance. my q? is should I give him the benefits of the doubts or should I press him and bring that subject again?