I have been feeling sick, In pain and weak. So I took a home pregnancy test. The first one came out positive (I think) a fainted line appeared a big heat and nervousness came to me so I decided to take another to confirm and it came out negative. -_- Now I'm confused.. am I or not? O.o

I had sex with my boyfriend on June 25th, could it be too early for a test to detect?

My period is scheduled to come on the 20th or next week.