Peeing often.

So I wake up at least 3 times a night to pee. It feels like Ive been holding it for days. I make it a point to not drink water before bed so not sure where all the pee is coming from. I do wake up maybe once or twice and drink a few small drink of water but nothing to make me have to pee that much. Any ideas why? I keep searching google and I keep finding ovarian cancer? :/ (my aunt has this)
I'm healthy, 27 year old, have a normal period, one child. It's gotten worse it seems after my child who is two.
 I am not pregnant!