Those are questions for your doctor-- there's no way around that! You need to call the nurse at your doctor's office and double check about your restart dosage and whether any of your side effects need checked out. (They sound like pretty typical side effects, but only your doctor can say for sure.)
Your doctor will understand about the mixup, etc.-- he/she sees people who accidentally (and intentionally) stop and start medicines like Paxil all the time. Call the nurse and/or doctor today and start feeling better!! Good luck!!
(Sorry to sound like a corny informercial at the end, but seriously... call the doctor or your pharmacist!)