Hi, I am a 50 year old female, the last few months I have had pretty continuous symptoms of a uti, ĺ have had numerous courses of antibiotics they relieve it whilst on them then it starts again.  I have blood on dipstick test at gp but no infection on sample sent off. My last test last Thursday showed pus and blood at gp, came back with pus and blood but no infection again after being sent off.  Hadx3 day course of strong antibiotics , finished Sunday back to square 1 today.  Gp has booked me in for appointment this Friday apparently if it shows blood again he is referring me for 2 week urgent referral.  Am I right to be worried.  I really don't know what the symptoms are .