Pregnancy Makes Me Cramp More And More Frequently

I was diagnosed with epilepsy for more than 15 years, and I take tegretol(carbamazepine) and sodium valproate from 1997 till now. The disease has been controlled partially. I still have seizures once one or two months. When I have seizures, my left leg cramps for several seconds, but I never lose my consciousness. Three months ago, I was pregnant. In the first two months, it is normal as past. But in the recent 3 weeks, my seizures become more and more frequent.. Now every day and night, I have seizures every hour, I just can’t sleep. And I can feel obviously the condition is becoming worse and worse. My doses of bill are already very high, my doctors don’t suggest me to add doses because it will harm my unborn baby. I am scared because no one can help me, how can I do?