false positive??

im 15 weeks pregnant. later in May i experienced symptoms like in bladder infection.went to emergency room for 3 consecutive weeks for that.eveeytime had my urine tested.in my last urine test last week i was informed its positive for gonorrhea. i was very shocked coz the last time hubby and i had sexual contact was in late march/1st week april. he was tested negative. i dont have extramarital affair what so ever. doctor dont know what happened. i think it false postive.theres no way i will get it. does anyone experience like this??