My Lmp Was 8/8/15.previously Had 36 Days Cycle.trying To Conceive.this

My lmp was 8/8/15.previously had 36 days cycle.trying to conceive.this time on 11/9/15 i had blood stained discharge.no pads used.blood stained discharge was also on 12th 13th 14th and 16th.upt on 12th was negative.usg on 15th showed empty uterine cavity endometrial thickness 6.5mm .normal adnex and polycystic appearence of ovaries.any chance of being pregnant.should i wait for repeat scan or usg?