I had protected sex on the 3rd of August, started my period on the 4th. I haven't had sex since, but my period is late. Is there a possibility of me getting pregnant? I don't use birth control pills.

There is always a chance a woman who has sex can be pregnant, even with birth control - even on the pill, even having a period after sex. In your case I doubt that you are pregnant, but that just means that the odds are very, very low.

Every woman has months that aren't regular, or even skip entirely. Possibly even because of worry over this. Feel free to take a HPT in about 2 weeks.

Yea u can be pregenant even u get period on next day..

It is possible that you can be pregnant. This is more rare to happen this way but it is possibe. You really need to wait till next month and see if you miss that period. It is more a waiting game now