The past couple of days I've been feeling the pressure to urinate more and more often which I know isn't strange in pregnancy but when I go not a lot comes out!I left a urine sample at my doctor and the receptionist rang to say they found infection in it but they are sending it to the lab to see how to best deal with it. Should I be worried about this?I'm 18 weeks and have had two previous miscarriages so I'm already beginning to panic!