###Human: How can I confirm that whether my spotting is implantation bleeding or periods? ###Assistant: Hello. This is not an implantation bleed at all as even urine pregnancy test is negative. Considering that you have been having regular spotting during this month since 14th of this month with hypomenorrhoea, there are possibilities that your serum Estradiol levels are low which is a possible cause of such irregular shedding of the endometrium. It is important that you get an ultrasound pelvis done to check for endometrial thickness which if less than 8 mm then likely that you would not conceive during this cycle. Please tell me what hormonal profile was done with thyroid levels, serum prolactin, serum progesterone, serum estradiol, FSH, LH and AMH levels to establish the cause of such irregular shedding.