a little nasuaus and nothing seems good to eat...

Ok so here is the situation, I really dont remember when my last period was I think it was the last week of February.I had unprotected sex on march 27th, the next day I had cramps and a white discharge. I thought I was going to get my period since I was having those cramps and I know it is rare to get pregnant before your period starts. On the 29t and 30th i had very very light spotting by noon of the 30th I had finished spotting. Now its the 8th of April and none of those symptoms have come back. I am feeling a little nasuaus and nothing seems good to eat, and I have noticed I have been a little dizzy sometimes and I have noticed I have been getting tired earlier. I know I have to wait until I miss a period to take a home pregnancy test but I was just wondering could I be pregnant? Has anyone else had a similar situation and found out they were pregnant? My husband and I have been trying so it would be wonderful if I was.