So for about the past 5 or so days my nipples have beven super sensitive and erect. I'm not sure what would have caused this but I had a uti (it's now resolved), and my period should be coming. I've never had my breasts been like this before other then after extreme fondling and even then it hasn't lasted this long. My breasts normally never get tender near my period anyways. I know I'm not pregnant or breast feeding. So what could this be (yes it's in both breasts).