Trouble sleeping

Hi, everyone.
Back in August, my boyfriend at the time sexually assaulted me while I was asleep, didn't stop after I woke up and told him to stop, and forced his penis in my mouth a few days later. We broke up pretty soon after that, but it took me months to really start processing what had actually happened. I had pretty much convinced myself it was just a dream.
I'm talking to a counselor and I have a no-contact order against my ex through my school, but it's a really small campus so I still see him and hear him speak & laugh a lot more than I'd like to. I'm trying to take more official action through my school, but it's a slow process. About 2.5 weeks ago, I started on an antidepressant that's also supposed to help with anxiety. But I still have so much trouble sleeping. I get really anxious trying to get to sleep and wake up ridiculously early. Does anyone have any advice?