effect of coming off the pill?

Hi,
Welcome to ehealthforum,
Shorter/altered period could be suggestive of possibility of pregnancy (especially if you had been sexually active without protection after stopping with the birth control use). Wait and watch for your next periods. If pregnancy is suspected, look out for development of any new symptoms suggestive of pregnancy and consider visiting your gynecologist at the earliest for thorough examination (to confirm pregnancy related changes/signs in body) and blood/serum HCG level test (to confirm/rule out pregnancy accurately). Be in regular monitoring and follow-up with your treating doctor/gynecologist and report any new/abnormal symptoms immediately. Take adequate rest. Drink plenty of water. Maintain healthy diet and lifestyle.
Take care.

Thank your for your reply Dr.

I read about "periods without ovulation". I am worried about this as I know it might take a while for the body to get back to its normal state after coming off the pill. As my period was not normal, I wonder if I had ovulated this month.

Is it possible to conceive if one have unprotected sex 2-3 days after period stopped? But in that case should not the home pregnancy test show +ve result before starting of the next period?