If you got your period than you need to assume you're not pregnant and resume your medication. And as the others have said, please speak with your doctor.
I agree with the above - discuss this with your doctor. If you have a problem with your BP which resulted in you being prescribed medications, you should not just stop taking them without talking to your doctor.
I would ask your dr. Are you going to take a hpt? Best wishes to you. I hope you are feeling better!