Overthinking...

Ok so I struggle with anxiety likes it’s NOOOBODY’s BUSINESS... I take meds and all but I struggle. If my husband acts the SLIGHTEST bit off I automatically feel like I did something wrong, and ask him if I did and he says no I didn’t... what does my brain do? I think I did something wrong no matter how many times he says I didn’t. How did I stop this? He ends up getting frustrated with how many times I ask if I did something... I just can never seem to let it go. I’ve been emotionally abused before for three years from my previous relationship and I knowI I still need to heal from it and he’s very supportive.. idk what my problem is. Anyone else struggle with this? We went for a few drinks and I wanted to have sex and he said he didn’t feel well (which I TOTALLY understand) and I automatically feel like I’m not good enough... why am I like this?? I always feel like I’m a burden... sorry for the long post, I’m just struggling