White blood cells in urine but no infection?

[HuckleberryGin]

I've been feeling awful recently, lots of hard to get rid of headaches, exhausted, nausea. Also a need to wee frequently and never feeling like bladder is empty. Finally went to GP who did a dip test, and said white cells present. So went off sample for full test and gave me antibiotics. Finished those, Feb bit better, but majority of symptoms still there. Sample came back negative for infection.

So what seems could it be? I'm trying to make an appoint fore next week.

Oh no huckleberry- hope you feel better soon

Apologies for asking something so simplistic, but are you definitely drinking enough fluids? So easy to get a bit dried out in the summer, and tempting to drink less if you're running to the toilet, but concentrated urine is incredibly irritant if your bladder is feeling sore and twitchy. You want to be drinking a lot (no caffeine, obviously no fizzy, no fresh citrus), and seeing your urine come out dilute, to try to help your bladder calm down.

Unless, of course, you're already doing that.