Feel so insecure

I recently had a baby and me and my bf have been together for over a year now . When I was 36 weeks pregnant I caught him watching porn . I later found out that he has been lying to me about it and has a porn addiction . I feel so insecure and unworthy now . I constantly worry if im food enough or if the sex is good enough since he is used to porn . I dont know how to trust him .