Symptoms?

I used the withdrawal method a day before my fertile window. I am now 5 days after my fertile window and I feel nauseous today. I always haven't used the bathroom much, have some cramps, have felt bloated and am highly anxious. However I don't have sore breasts yet. Is there a good chance I'm pregnant? Also is it too early for me to take a home pregnancy test? My period is supposed to start on June 9th. Thanks