I had my cycle april first thru 5. i had unprotected sex on the 12th of the month. two weeks later having hot flashes, heart palpitations, slight cramps, headaches, started spotting on 27th, heavier sp?

If pregnant,: It is obviously early. The fetus may be secreting enough hormone, if present, to change a upt? Nausea can be on a continuum, hot flashes may b a sign it is coming or may be unrelated? I would check a pregnancy test, if positive its likely due to hormones. Gd luck.

Pregnant?: The first thing to rule out is pregnancy. Purchase and perform a home pregnancy test. It should turn positive when you are 1 week late. If it's negative, repeat in 1 week.