since i've had a regular sex partner i decided to go on birth control pills. i started taking the pills i was prescribed last time (about a year ago), there was still one pack left. & now i have some bleeding (not really bleeding, just spotting which increases especially after sex) what is the side effect of the pills as far as i know. are there any ways to stop it or do i just have to wait when the body gets adjusted to it? because it's really embarrassing when having sex. are there pills that don't cause side effects like bleeding? and if i take the pills, a partner can come inside, right? or is there still a risk to get pregnant?