I am 18. I was a victim of attempted sexual assault. I have ptsd from it. Would i be able to enlist?

This is not the right forum for such a question. Service members should expect privacy and respect when dealing with such situations. I would recommend contacting a recruiter if you feel you face challenges from your previous life experiences that would potentially impact your chances in serving in the military. No one here will be able to access your situation accurately. Any review of mental health needs to be conducted by a healthcare professional.

Speak with a recruiter.

The answer is it depends. Reasoning is that individuals who suffer from PTSD suffer in many different ways. There is not set standard on how individuals with PTSD are supposed to act. Each case is unique.

To start, you need to have been formally diagnosed by a licensed psychiatrist with PTSD. If you have not been diagnosed with the disorder, you cant really say you have it.

If you have a formal diagnosis, you will be required to provide documentation that the disorder will not negatively hinder your ability to serve.

Start with that.