I was recently diagnosed with pcos. took two pg tests and slight pos on both. took another and neg. could pcos cause a false neg. been feeling preggo.

Fal: False positive pregnancy tests with PCOS can be caused by high levels of LH (Luteinizing Hormone). False positive pregnancy tests can also result from becoming pregnant, then having a miscarriage (no symptoms), reading the test after the specified time has past, an expired date on the test kit, or impurities in the urine sample, such as soap, detergent, or blood and some medications.