I almost ped out and dont feel better, what can I do?

I was in the doctors office today for a very minor 10 minute surgery to have a keloid scar cut away from my ear. It literally only took about 10 minutes and I did not feel a thing. I get queezy sometimes, so I took Dramamine before the appointment hoping it would help me not to get nauseus. When the procedure was over I layed still for a few minutes then went out into the reception area to finish up with paper work. While standing there my heart starting pounding, I felt cold and hot at the same time and heard a ringing, then my stomach turned over and my hands started tingling along with my forehead. I knew I was gonna faint and when the receptionist looked up she knew it too because I was as white as a sheet of paper. They layed me down and gave me water and when I felt better I left. Not as bad, but it happened 3 more times in the last 9 hours. My stomach hasnt felt right since and I feel like I could drop any second. What do I have to do? I took a nap, drank lots of water and juice and ate.