Accused of cheating

My husband and his best friend think I am cheating on him. I am a stay at home wife with depression and because I don't share what I do in my day with him (eating food, watching YouTube for hours straight because I am a piece of shit) he thinks there is someone else.

Should I say anything to his Best Friend? I feel so betrayed. I don't want to freak out on them because I don't want to look like I have something to hide but I am fucking furious.

I am in shock and i can barely leave bed.