What is a chemical pregnancy like?

Curious ladies...what was your experiences with chemical pregnancies? I’m wondering if I had one...

Leading up to period:

- Boobs felt pins and needley sore/dull innate ache (usually boobs are tender all over)

- Had a 3-4min uterus cramp when I orgasmed (never happened before-my friend had that happen in her early pregnancy)

- Just “felt” pregnant

- No bloating like usual before AF

- specific craving(s)

- But pregnancy tests came back negative

So then...

- AF showed up 3-4 days late

- period is extremely heavy which is abnormal for me (changing tampon every hour or so and still spotting in undies)

- LOTS of clotting, lumps, strings of lumps, small, medium, etc.

- intense cramps which is abnormal for me

Can lifestyle changes affect the severity of periods? I recently (around ovulation) quit smoking weed daily, started working out 4x a week, and started taking raspberry leaf supplements. Could this have influenced anything? What’s sticking with me most is this period, the heaviness and lots of clotting and bad cramping which is so not like my body usually! Maybe I’m just riding my body of toxins or something?

Any input would be greatly appreciated. Thanks!!