Birth control third month

Hello if anyone could potentially give me insight on this it'd be great.

I'm currently started my third pack of birth control the pill. However with this new pack I seem to have had a prolonged period Im three days into the new pack and still someone bleeding/spotting. I appeared to have a clot in addition I recently felt a small burning sensation when urinating and feel bloated but not pain. I'm wondering if this has anything to do with my body still adjusting? I was sexually active the first day of the new back but used a back up method, the condom idk if it'd have something to do with it.