help please?!

Shellie • Add me on snapchat: datgirlshellie💕. I'm bisexual you can hate me or not but I am who I wanna be❤️
Okay so it's been 2 days after unprotected sex and 3 missed pills. My period ended last week on Thursday. As I started bleeding yesterday.. and it's gotten worse today I've been having to use a pad. Idk what the fuck is going on. I've been feeling sick and hurting all over. Someone please help me...