That is good that you are using condoms. Because they contain spermicide they are a pretty effective form of birth control. Because she got off of the ring mid cycle she first had her ring period (which is not a typical period). Anytime you are on birth control, the week you have your period, you aren't acutally expelling anything because you didn't ovulate. She had two periods because anytime she takes out the hormonal ring, her body will bleed, but because she stopped the hormones, her body ovulated and the second time she then had her real period. You are a pretty aware boyfriend, which is good

the best of luck to you guys. I am sure everything will be okay.
Natalie