Epilepsy with birth control?

Beth
So yesterday I was diagnosed with Juvenile Absence Epilepsy after my first seizure in February. Obviously this is quite surprising for me as I'm 19, and had no previous health problems. I'm awaiting to see another consultant as I'm being put on medication to control the epilepsy but as of right now, I have 3 options. I think one was called Lamotrigine(?). I'm currently on Microgynon and have been for around 3 years but one of these AED's can cause both medication to become ineffective. Is anybody else on medication like this and have any advice on what to do? Thank you :)