Should I tell my boyfriend I suspect I have ptsd?

I'm pretty sure I have ptsd, and my symptoms just popped up shortly after I started dating him. I experienced a major trauma 1 year ago, and I thought I was doing alright, otherwise I would have never started dating him. We've been together for just a couple months but are both very committed and attached. However, I have more bad days, and on these days I feel incredibly distant and unlovable. Do you think I should tell my boyfriend what I think the problem is, so he can understand a little better? I go to a doctor in 58 days.