I get my period every 24 or 25 days, i had my period july 24 and i had i had intercourse on july 28; august 1 and 3.could it be possible that am pregn?

Possible...: It is certainly possible that you could have conceived. With a 25 day cycle and your LMP, you are theoretically most fertile from 8/1-8/6; however, ovulation isn't like clockwork and there are many factors that influence it. If your period is late, test for pregnancy.

Yes: If you are having sex, protected or unprotected, it is ALWAYS possible that you are pregnant. There are times and conditions that make it more, or less, likely; but it is possible. Wait a week and check a home pregnancy test if you are worried. Or just wait and see if you have a period next month.