I can be pregnant if I had sex 4 days after my period ended?

I need help, I had sex 10 to August 11, I started my period on 3 August and ended on 7. What are the chances that you are pregnant?, How long should I wait to see if I'm pregnant without waiting 28 days to comply with the rule comes again?

Hey girl, look as far as I know the fertile period of woman that lives hard egg (two days), only ovulate once and is roughly half rule (14 days). If you have a regular rule, ie, lasting 28 days, the probability of getting pregnant is zero. Since the sperm does not live up 7 days, as they say, live sperm at most 3 days, and in any case to live 7 days, however you are not pregnant, you understand, that if you have a regular period of 28 days. Anyway haste proof that teenage girls do not usually have regular periods. Oh and one thing took 4 days your period? not well understood