The chances of pregnancy are very very very low with BC pills if you are taking them everyday with the same time frame (an hour before or after the usual time). If you did take even 1 pill late, it can screw up your periods. When I was on BC pills, even when I was really good with it, if I took one even an hour and 30 mins after my normal times sometimes I would get bleeding in between.
I am not saying it is not possible for you to be pregnant but the chance is fairly low. but you could test anyways
I'd say test as well. A pregnancy test can show accurate results two weeks after your last sexual encounter. The side effects you've described can all be related to birth control pills and can happen at any time, even if you've never had them before. As said, even if it's not common for you, it's common and normal in general for women to experiance withdrawal bleeding at random times. The human body isn't perfect and does odd things at times.
thanks for the comments btw the bleeding completely stopped today
Well it could mean you are PG. Or spotting and bleeding between periods is common. Even IF you NEVER have had it happen before. Stress, weight gain, different diet excersise can all mess up your cycle. OR for NO reason at all. I'd say take a test. Go from there.
kinda sounds like miscarriage. but at same time kinda doubtful. Go see you'r doctor