So me and my bf had unprotected sex on February 5th and he ejaculated a bit inside me. So he went to buy the plan b pill soon after, so I took the pill about an hour after the incident happen. After a couple of days I started spotting then got my period a day early than what my period tracker had predicted it would come. So I got my period on the 11th when it was supposedly suppose to come on the 12th. But lately I have been feeling a little bit nauseous, but that sometimes goes away with gas. But these past few days it feels like it been getting worse but it mainly at night. And I've been feeling slight cramps as well. It kind of feels like I'm about to have my period again but I'm not too sure. I dont know if im just being slightly paranoid or not. My period tracker says that my next period should come March 9th.