Could I be pregnant?

Dani
Okay.. So im hungry all the time. I could eat a 5 course meal and still want more. Like wtf? And I've been peeing a lot. It hurts to lay on my stomach anymore . It's been hurting a lot in general. I haven't thrown up or anything but I've felt the urge. It was just last week that I had unprotected sex though.. But also, today at work I went to the bathroom and I found this light red stuff on my liner, and I'm not due to start my period until the 18th. HELP.