Me and my boyfriend had unprotected intercourse on April 6.This is when I was most fertile.A couple of days later I started feeling tired all the time.I didn't have any energy at all.On April 13 I started having headaches, started cramping,frequent urination,nausea,still had fatigue,and I felt dizzy whenever I would stand up.On April 15 my appetite has increased tremendously.Sometimes I have an appetite and other times I don't.I just have a full stomach feeling when I haven't ate anything.I don't have any breast tenderness at all.My periods are regular and it was supposed to start April 22 or April 25.On April 17 I started having pinkish bleeding.Its like a light period.Since I have been bleeding I have light cramps every now and then.I have also been having a tingling sensation in my cervix that comes and goes.Could I be pregnant?If I could be when should I test?