My last periods was on 25th nov 2013. Today is 11 nov, ie; 17th day from periods. Is there a chance of being pregnant now?

Do you mean October 25?

I am sorry, yes oct 25

If you had sex there is a chance you are pregnant.

Yes I had sex. I am a married women. Today I vomitted, and feeling so tired.

You will have to wait to see if your next period comes as expected. If not, wait 2 weeks then test with first morning urine.

Okay thank you so much. Should I take any care or is there any problem for having sex?

Having sex is normal and healthy.

Thank you madam for your valuable time... God bless you.

Yes I had sex. I am a married women. Today I vomitted, and feeling so tired.

Sounds like a stomach flu or other digestion related issue.