Am I wrong?

I have been with my partner for a couple of years, and have put weight on since getting together and being on the depo injection. I have been struggling a lot with my mental health recently, and am in counselling. I have an eating disorder and have for my entire life, which I am also seeing a counsellor for.

My partner continues to nag me about going to the gym with him when I’m off. But I really don’t want to because I feel uncomfortable and am really struggling at the minute. I’m a nursing student and on my days off I am so tired and just want to chill out but he constantly nags me to go to the gym with him, and goes in a mood if I don’t want to. He lives with me and I tidy our space, wash the dishes, wash our clothes etc. Last night he called me a slob, and I got very upset and he’s said I’m in the wrong for being upset by it. Am I?