Small lump in lower belly?!

Hey Ladies!

I’ve been trying to conceive for a while now. This month before AF, I had no boob soreness and just felt absolutely fine. Fast forward to spotting a few days before my period was due, and then it stopped. No clotting, and didn’t progress into a full period as expected. And that never happens!

I took an at home urine test the day my period should’ve came. And five days after and got negatives. However my belly is super bloated and I have something firm in my lower belly only on one side.

Wondering if I’m simply crazy and imagining things or if I could actually be pregnant!