Can HCG levels be too low to show on a HPT?
Patient: I have PCOS and ttc.  My dr had me take clomid and progetrone at the same time (first time taking clomid) after I had 2 days of light brown spotting.  2 days after I finished the clomid I had 2 positive opt tests 2 days in a row.  The next day I had an inconclusive hpt. So I waited a couple days finished the progetrone, which usually makes me start my peroid the very next day and took another hpt; it was negative. Fastforward 2 weeks, I still haven't gotten my peroid, my breasts are swollen and nipples tender and I have become extremely sensitive to smells. I took another hpt today and it was negative, could my hcg be too low to read on a hpt? Doctor: Hello,thanks for using health care magicI have read your query with a lot of concern. The first thing i find is a little ambiguity as to why your hpt were positive and two weeks later negative.It most likely scenario is that the hpt gave false positive results. Normally, pregnancy test becomes positive at two weeks after fertilisation i.e. about the time the next menses was about to start and the first symptom thus is absent of menses in most cases.If truly, the tests were positive, then you might have been pregnant long before you even started taking the drugs and you must have had a miscarriage that has resulted in negative hpt. However, this is also ambiguous because it requires averagely three weeks for the test to become negative after termination of pregnancy.If you recently became pregnant and its less than 4 weeks(you have not yet missed your period), the hpt will be negative.Best regardsDr Achuo