Hello everyone) can you help me? I don't know what to think, bad thoug…

Hello everyone) can you help me? I don't know what to think, bad thoughts keep popping into my head, my husband started going out with friends and always walks until morning, while at the same time he doesn't answer my calls, he might come home from work in the middle of the week, to some place, while saying that he is at work, I can't talk about this topic with him directly, we live with his parents, they are always on his side, I don't want to think about the bad, but there are suspicions in my head...