Topamax and irritability

Well to start I just joined this site today...it's been very helpful to me actually. The reason I got on here was because I've had migraines for about 10 years now, pretty much ever since I can remember as a teenager. Now I have them all the time, sometimes everyday. They've done scans and everything else and can't find anything wrong so I've just been put on medicine now since that seems to help somewhat. Well they put me on Topamax and I have been on the highest dosage now for a couple weeks and

I seem to flip at the littlest things. Ever since I've been on this medicine I seem to be very irritable. I talked to my doctor today and he said it probably won't go away but to try the medicine for a couple more weeks. I just wanted to know if anyone else has had those problems? I mean I was never that way before and now I feel very out of control. Almost like I am bipolar because one minute I will be fine and the next I'll be so mad at something and I will want to cry. I just don't know what to do. The other medication my doctor wants to try is verapamil....just wondering is anyone has tried it and if there are any horible side effects? I've read up on it and it seems like an OK medication. Well, thanks for reading :) This site has been a great help to me!