I have been on a trial run of bupropion (Wellbutrin SR) for 30 days. I ran out two days ago, and I don't have an appointment for another refill for 5 days. Should I expect withdrawal symptoms? I woke up this morning feeling awful, and I have recurring headaches and dizziness. My chest hurts and it hurts to take deep breaths... I don't know if this is the result of a cold/flu or withdrawal. Is it possible for me to withdraw after only taking the drug for 30 days? Please give suggestions as to what I should do... thank you.