I've been in therapy since last year for anxiety. would i need to see a psychiatrist? he mentioned a referral if i need long term medication.

Since you have PTSD : & an anxiety disorder, it is likely that adding appropriate medications to your Cognitive-Behavioral Therapy for anxiety& psychotherapy for PTSD will be beneficial. Effective therapies for PTSD are on http://psychcentral.com/lib/treatment-of-ptsd/000665. Seek medical check-up from your primary physician + any baseline lab studies needed, depending on the medication & referral to a psychiatrist.