we had sex on 31 july n took postinor 2 on 2nd and 3rd August, she bled on 14,15 and 16th of August...on the 10th she complained of pains in her nipples and vag . then,the following morning she had her period which lasted for 3 days but now she is having a bloated stomach and she eats a lot could this be a sign of pregnancy?