Hi there MichelleW.
I am in my 2nd pregnancy (unplanned) and I have epilepsy.
I had a terrible first pregnancy as i was unable to be on medication and so all throughout the pregnancy I had seizures which was really scary - but luckily i don't get convulsion seizures.
Labor for me was extremely bad also, as i was in and out of consciousness with seizures and so forth.
I am medicated now for this pregnancy and so far all is going well.
Don't let this scare you though....
All the best with your MRI and pregnancy.