Self harm, support worker and BPD

So, i'm seeing my support worker tomorrow, for the first time in a month, and i feel like i have SO much to tell her, i've been on a bit of a rollercoaster for the last month.
The problems that i've been experiencing dont seem to be bipolar related, even though i am diagnosed bipolar, i feel everything thats been happening fits BPD, far better.
I'm starting to doubt i have bipolar, but i cant really argue with the Pdoc, can i?
I'm off meds and have been for about 3 months now, and things are so much better than when i was on them.
Anyway, i've been self harming, and i dont know whether to tell her, i feel guilty about it.

You can certain bring up the fact that you feel so much better off the meds. And ask whether pdoc still feels certain about the bipolar dx.

As for the self-harming, why not tell her? What's the guilt about--self-harming or maybe not telling her?

I'm sure glad you're feeling better off the meds. No cycling at all?

No severe depression for quite some time.
Been cycling between a hypomanic state and normal. Not feeling 'good,' but its not depression. My anxiety is the best its been for 3 years.
The bad stuff is more thought related than mood related.
I feel a huge amount of pressure not to 'break,' not to cry, not to let anything get to me at all. I've kind of blanked myself, from caring about anything.
I'm usually able to explain how things are, but right now i cant, which is why i feel worried about talking to her at all, because, i have a habit of filling in blanks, explaining things, so essentially lying, because i have to say SOMETHING. I dont realise i'm doing it.

if she asks why i have been self harming, instead of saying, 'i dont know,' which is the truth, i'll justify it, or explain it with some sort of text book answer, or something i have heard someone else say.

I'm in a weird place.