Weird symptoms, help me out!!?!

Weird symptoms, help me out!!?

I have been having cramps and swollen ankle since a few weeks. My stomach is a little bit queasy in the morning.The other day mum kind freak me out when she joke "the last time i had swollen ankle, i was pregnant with ur brother". I know, i am pretty sure that am not pregnant. I have been on the pill and my period have been coming regularly. Even though, i have a pregnancy test which proved to be negative. So what is causing my swollen foot and upset stomach?
It has been more than 2 weeks that it has been like that. So please help me.

I would go to see your doctor, it could be a reaction to the pill you are taking. My friends leg swelled up, she was on dianette (sorry not sure if that's how it's spelt)