Strange symptoms 8dpo

Cathy

So I am about 8dpo (based on CM monitoring not opks)

I have got sore boobs and nips, and very light cramping in my tummy since 5dpo (3full days)

No bleeding, and I got tested for a UTI and it’s not that,

I took a test today, negative.

If I was pregnant, it would only be super early, so would I even get any symptoms yet? O confused 😢