I am scared :(

Well, I see my therapist in 2 days. I talked to him on the phone today and he asked how I was coping with the week since he knew it was rough. I told him I did very well and was generally ok. In reality (trigger?)) I did SI (nothing crazy, bruised myself). I want to be honest with him in therapy when I see him but I am to scared to.. What should i do? What response should I expect. I always get scared that he will yell at me.

Have you told him about your SI in the past? If so, how did he react?

The possibility of responses can be endless. I told my T and Pdoc on day one about my SI. They really didn't react. Well, my T did try to tell me she could hospitalize me, but I already knew that if she did, the hospitals won't take you for SI alone. They will only make you be inpatient if they feel your life is at risk. But my T and Pdoc always wanted to know. I no longer SI though. I think it's been 6 months. I bet I'd get a sad and disappointed reaction if I started again.

When I saw him months ago. Yes, he was worried and concerned. He said he was so proud of me for not harming in months. But now that I did. I am to scared to bring it up. Especially that I lied to him.

Then I don't think he will yell at you or be angry. You'll probably get the same reaction as last time.

You did not mean to lie, it was probably just hard to be vulnerable and open up emotionally on the phone, we are all condiotioned to reply with "Fine thank you" when asked. I'm sure he will understand it takes time to bring up such a difficult topic. You need to feel safe to share such a personal thing. I am sure he will be patient and understanding and want to hear all about your inner struggles.

I think he knows you're in therapy because you have things you're struggling with and one of the ways you've dealt in the past is to SI. I obviously don't know him but I think he'll be glad you told him and will work with you to understand why you SI'd and how you can find more useful ways to cope. But more importantly, you have a right to expect something like this from him. If he did yell at you, that would not mean you deserved it. It would be his issues. I suspect he'll be glad that you shared with him, though, and will help you.