What is going on?

<a href="https://glowing.com/glow-fertility-program">Iui</a> 8 days ago

I feel: (tmi)

Sore breasts

Watery discharge

Last night severe cramping in lower back/abdomen

Light but sharp cramping today

Nauseous in morning

Supposed to test on the 21st

Also expecting period on the 22nd

Anyone else have these symptoms for implantation or early pregnancy after <a href="https://glowing.com/glow-fertility-program">iui</a>? Or get a bad period/PMS symptoms after <a href="https://glowing.com/glow-fertility-program">iui</a> cycle? Help!