Breakthrough bleeding or implantation bleeding?

I am currently on combination birth control pills, Junel Fe to be exact and have been on it for almost a year now. I recently got into a relationship and have been having sex pretty often, but we double up on protection by using a condom every time we have sex. I am good about taking my pill and have only missed it once. I woke up this morning and noticed I’m bleeding but I don’t get my period until after next week. I only notice it when I wipe down there and it’s more on the brown side than red side and it’s pretty light like I said. Could this be implantation bleeding? I am not in the position to have a child right now so I am really hoping that isn’t it and I feel like me and my boyfriend practice safe sex. I don’t think the condom broke anytime we had sex but I also don’t know what that feels like.. or what if there was a leak and I didn’t know? I’m getting nervous!