Hi. I have been having unprotected sex with my boyfriend,,and last time he "finished" it went inside me. But after 15 minutes, i had severe pain in my lower abdomen,,felt like someone was stabbing me,,and immense pressure. I tried going to the bathroom, but the pressure was so severe I wasn't able to. And advice? Should I be concerned, because I still have a milder version of the pain and it's been a day,,and I still have the pressure.