need help

I don't know why I am so paranoid but I just want some opinions. I'm on bc, my boyfriend uses condoms, and from my knowledge we've never had one break and still always pulls out. For some reason this month, I'm not really crampy at all. Sometimes the pain alternates sides, but never really like heavy, all over pain like normal. And my boobs are sore. Usually I just have bad cramping and sore boobs. And my best friend says that if I keep stressing about it that it won't come.. what do you guys think?