I have always had a regular cycle. until this today i noticed i had started over a week early. i am having trouble resting and headaches. am i pg?

Unprotected sex: At any time always has the chance of becoming a pregnancy, and/or one of many various std's: hpv (which can cause cervical cancer), herpes, gonorrhea, chlamydia, crab lice, trichomoniasis, etc. Using a hormonal birth control is generally a good way to protect preg, but condoms are really the way to protect from the others.Recheck preg test with first morning urine to verify. Breast tenderness 1st!