I had my period on 06/14/2013 been having unprotected sex after and before, and my period lasted for about maybe 3/4 days, how soon can i take a hpt?

Wait until next time: If you've had your period this time, you're not going to get a positive result, so you'll need to do it next cycle , and it can be done from 8-10 days after ovulation to about one week after you should expect your period (unless of course you get your period). Good luck.

Can I be pregnant?: If your period was on time and normal in length then you are not pregnant and do not need a pregnancy test. If the period was not normal then once you have missed your period then it is time to get tested.

After missed period: It is better to wait 4-5 days after a missed period to do home pregnancy test. Blood test may be positive sooner.