Hello, I have gone through your query and understood the concern. If the cause of the delayed period is pregnancy, and if the spotting you are experiencing is the implantation bleeding, it should be fresh and not associated with any pain or pieces in the discharge. Chemical pregnancy is used to describe an abortion that occurs even before pregnancy can be diagnosed, around the time of the expected period, and presents as ordinary menstrual bleed which may or may not show products as they are very tiny. In this scenario, you can go for the estimation of the serum beta-hCG titres to confirm/exclude pregnancy since HPTs cannot read well immediately after a missed period. This should be followed by a sonogram of the pelvis, preferably in the trans-vaginal route to clarify the situation and plan further management. Hope this helps.