Why does my stomach hurt when I are?

[ICanTuckMyBoobsInMyPockets]

That really!
My stomach hurts low down when I'm peeing.
I also need to go a lot more often, had to get up 3 times last night and that never normally happens.
It's not burning so I don't think it's a UTI, but don't think I've ever had one so I could be wrong.
Also my back is a bit sore now I think of it. Feels muscular though, just thought I'd throw it out there!
What could it be?

Also it's a normal amount when I do go, even though I'm not drinking loads more fluids.

Kidney infection?

I did think that, but doesn't that normally burn too? Thank you.

The absence of burning isn't enough to rule these things out in my opinion.

Get thee to a doctor!

Already decided to make a appointment for the morning as it's getting worse and I feel generally ill now, which I haven't the last few days.
Thank you