Are you still on your parents insurance? You might be able to find a T outside of the collage counseling center.

There are a lot of people here who struggle with this and yes, thoughts are not the same as intent. There area few threads here that have talked about how to combat the thoughts and some suggestions to let them flow without letting them consume you. Everyone has a different way of dealing with them.

Mine is to acknowledge the thoughts and then distract myself with games on my tablet, that keeps my hands and some of my mind busy. I've also used drawing, writing; just doodling and writing anything that pops up or even just a list of objects that are in the room with me. Anything really that can distract me. If it gets more serious and this doesn't work then I can use a hotline, there's phone hotlines and now online chat hotlines you can talk to someone outside of your self and get another perspective on if they are serious enough for a trip to ER or something you just needed someone to talk to without judgment.

PC here is a great place to get support. Welcome.