How do you deal with PTSD?

I was raped, abused, and sexually assaulted from 13 to 16. I reported him in 2015. I attempted last year by overdosing, which landed me in the ICU for 15 days with uncontrollable seizures. Thankfully I am okay.

I am now 19 and in nursing school and was accepted into nursing school about 2 months ago, so life is pretty amazing right now!

Anyways, I thought my PTSD was under control. I would jump and be startled if the fire alarms were being checked in the hospital I work at and that's pretty much it. I moved to a new apartment a month ago and I have lots of wonderful friends. I love them to pieces and I understand that one can not tell that I have depression, anxiety, and PTSD on the outside.

I feel like my PTSD has gotten worse.

I jump when a roommate (I have a suite) opens or closes their door. I jump when one of them is behind me in the kitchen. I jumped last night when my friend sneezed.

One thing some of my guy friends enjoy doing is scaring me. For example, they love on the first floor and so do I. I will be walking back to my apartment and they will scare me through their window. Or last night I was in my room studying at about 10pm and didn't have my blinds shut yet and one of them went up to my bedroom window and scared the living daylight out of me. The ones that know about my past and PTSD don't scare me anymore and one of them actually told his buddy not to because of my past, which I respect and was very happy to hear. I thought this other guy knew and he must have forgot because he was the one who scared me last night.

I'm going to pop into their apartment later today and just ask that he doesn't do that again and explain briefly why. Or if I see him in the halls.

How do I overcome this? Do I talk to my counselor? Can they help with this sort of mess?

Also, I am quite tiny, 5ft and 98 pounds, so it just goes along with trying to protect myself, as shown in picture of how tiny I am.

Thanks much!