Hi. I got my period on 7th july. Had safe intercourse on 16th july. took i pill on 17th or 18th july. there was some blood spotting for a day or two however still dint get my periods in August. so i visited gynac on 20th august. she performed urine test which showed negative results. and gave this pill meprate for 5 nights to regularise my periods and told that by 28th i should get normal period. still i havent got it except for blood spotting twice yesterday. plz advice if i should take blood test to check if i am pregnant.