It sounds like there are a lot of things going on with you right now. You really should go be seen by a doctor to make sure - but it could just be you are worried about your period and you hormones are a little screwed up from missing some bcps. You won't know until you test for pregnancy whether you are pregnant or not. Leaking breast usually don't happen within the first month though - so that might also be something you want to talk to a doctor about.
It is embarrassing to go for a check after rape - but it is the best way to convict the rapist and it is the best way to keep yourself safe. You need to get tested, not only for pregnancy but also stds. You have no way of knowing what he could have had.
I'm not saying any of this to scare you, i'm saying it so you know how important medical care in your situation is.