I took meprate for my irregular cycles too. From what my doctor explained its given to bring periods and isnt a contraceptive, so it doesnt block pregnancy. But honestly please ask your gynac directly about your specific case, dont rely on us.
I was prescribed it once but I really cant comment on chances for you. These hormone tablets work differently for everyone. Please ask the doctor who prescribed it, they will explain clearly.
My doctor said meprate is usually used to regulate periods, not to prevent or cause pregnancy directly. Whether you can conceive depends on your overall cycle and timing. Best to clarify your exact situation with your gynac.