What i gained from your question is that you were under treatment of infertility
and you had scanty flow this cycle , but HPT is negative .Well , i cant deny the possibility of a pregnancy
, though its is negative as it sometimes is, an early ones,I think you can go for a vaginal ultrasound
after two weeks.If your pain abdomen is persisting with persisting discharge per vaginum you can go for the ultrasound even earlier.You need not take any hormonal
tabs for infertility this cycle.
good luck, bye