Had a regular and very on time period for the past 2 years straight. Was diagnosed with PCOS but stopped taken Metformin for about 10 months now and my period was still very on time. Took 2 HPT and both were negative a couple days ago. Haven't been feeling too upset or sick but have noticed that I have had about 3 bowel movements daily when I usually only have one in the morning and that's it. M/C 2 and a half years ago and haven't been able to get pregnant since. Is there a possibility that I am pregnant and not showing on the home tests yet?