Do not go cold turkey off Paxil. Although many people have no withdrawal symptoms, it can produce severe effects in many other people, including strange neurological symptoms -- a kind of electrical buzzing.
YOu should give yourself at the very least a month to go off it, reducing your dose slowly. You should do this under a doctor´s plan.
Actually, I am wondering if your dosage, alternating between 20 and 40 mg daily, isn´t responsible for the side effects you experienced.
If you want to try an antidepressant, many people are having good experiences with Celexa.