I had my period on 1 april.on 26 april i had stains and it continued for four days it was red and pink but at the last day it was brown am i pregn?

Maybe not, but...: If worried, can test. A urine pregnancy test done correctly gives a reliable result 3 weeks after sex (3 weeks after when conception might have happened). If done sooner, a positive result is likely real, but a negative result may be due to testing too soon, and therefore lead to a repeat test. Otherwise, if a woman gets her next NORMAL regular period, then she is not pregnant.