Iv'e been taking lamictal for about a year now. I switched from ...

Iv'e been taking lamictal for about a year now. I switched from my previous medication to lamictal because I got pregnant and lamictal seemed to be the safest for baby. Baby was born fine but after the delivery I started experiencing dizziness and blurred vision, just recently though I'm starting to get a burning sensation in the upper abdominal area, shortness of breath and racing heartbeat. I've read that certain antiseizure medications can cause ulcers. Has anyone experienced any of these symptoms???? Please let me know!