Have you done a test? My friend had a period full way through her (healthy) pregnancyI've heard this before and I do normally have a big drop when my period starts. Up again today! Surely I can't be pregnant with a normal period.
Or you're maybe coming down with a cold
![See-no-evil monkey :see_no_evil: 🙈](https://cdn.jsdelivr.net/gh/joypixels/emoji-assets@5.0/png/64/1f648.png)