Urine sample on thursday showed white blood cells and protein but as I had no symptoms they sent the sample off to the lab. Today got really low pain in my pubic area and feel like I need a wee all the time but not alot is coming out. I'm 21 weeks
walk in centre or out of hours GP service. Alternatively given that you are pg you could try the maternity unit - for advice if nothing else. I have had ABs prescribed by the labour ward SHO/Registrar before. Was a pain because I had to sit around and wait for them to bring them from teh pharmacy (was a weekend). You can't take hispital prescriptions to a high street pharmacist.
As you are pg you need ABs. As Weegie says it can cause complications in pregnancy - including premature labour - which at 21 weeks you most definately do not want.
The first time I had one in pg I ignored it all weekend and it travelled up my ureter to my kidney, I got pyelonephritis (kidney infection), was in hospital on a drip and IV antibiotics and then had several weeks of passing tiny kidney stones (a mercifully very rare complication.