I have a pain right where my ovary is can someone help it hurts so bad!?

It hurts when I lay on my side. And the pain goes and comes. It woke me up last night if hurt so bad, it seems to hurt more when my bladder is full. And when the pain comes it hurts worse when I breathe in for some odd reason. Can someone tell me what this is? It's like 2 weeks after my period so I thought it might be ovulation. I've never had before. And im 16 Thanks