My ovulation was occurring on the 8th. we had unprotected sex on the 7th. today i have been experiencing cramping and acid reflex. am i pregnant?

Maybe. Maybe not.: It can be hard to tell if a woman is pregnant because some of the symptoms seen in early pregnancy can also happen in non-pregnant women. Realize that today is the 10th, and nobody had symptoms CAUSED by pregnancy 2 days after ovulation. A urine pregnancy test gives a reliable result about 3 weeks after sex (3 weeks after when conception might have occurred), or 1 week after missing a period.