To wonder if I was pregnant?

[KimPossible7]

Ever since I started my period it has always been regular and on time. The latest it's ever been is one day, so when my period hadn't arrived after a few days, I assumed I was pregnant. However, I took test after test and they all came back negative. 15 days passed and still no period and negative pregnancy tests! Today is day 16 and my period has finally come.

What reasons could there be that my period was 16 days late? I'm not on any medication, not stressed or done any of the things that would cause a delay to my period. Could I have been pregnant and lost the baby really early?

i doubt it. hcg would stay in your system long enough to show on a test at one of those points. your body can just screw up sometimes, just one of those things

Periods are just sometimes late.

yeah if you were taking pregnancy tests and they were negative you weren't pregnant. My experience is very different to yours in terms of regularity but yeah loads of reasons, including but not limited to low weight / weight loss, & stress, health being a bit 'off' including some women's response to vaccinations.