What’s going on ?!

I’m on the mini pill (no break) and it’s very rare to get a period whilst on it. Admittedly I did have a period last month due to my body getting used to the hormone changes but I’m not worried about that, it’s normal.

Although .. last week I had sex and my partner came in me .. since then I’ve had very light brown spotting and the urge to pee constantly.

What is going on ?