SOMEONE PLEASE HELP.!

Cierah • I'm Short And Weird But I'll Change Your Life 😛
So I'm 15 years old and a few weeks ago my boyfriend and I had sex. Ever since then I've been feeling kinda strange like having headaches and being dissy and very tired. My discharge is sometimes creamy and it's very white. But when I'm around him I feel fine and don't have any of these symptoms. Can someone help.!!?