A lot of people don't get withdrawal. A lot do. Those two drugs aren't the worst for withdrawals. Prozac stays in the body for about a month, whereas the other ssris such as Zoloft leave in a matter of a day or less. So if there is going to be a withdrawal from Prozac, it's usually so long after quitting that shrinks probably don't attribute it to the Prozac. I'm not as familiar with wellbutrin, but the worst withdrawals are from snris, ssris other than Prozac (especially Paxil and Effexor), and benzos.
Thanks for answering, yeah I hope I don't get any still no symptoms.