Ok so yesterday evening all of the sudden I got this sharp pain where my left ovary is, it would just come and go. It's better today, definitely doesn't hurt as bad. I usually get my period between the 14th and 20th so it's coming up. My boobs are also really sore, like when I ran yesterday it hurt which was weird, that usually doesn't happen. So naturally I'm panicking, could this be because I'm about to start my period or could it be ovarian cancer or something??