Chlamydia ?

So recently I went to the doctor for my annual check up, and found out that I had Chlamydia. I had no symptoms at all. I didn’t even know. I felt funny back in June and I went to go get tested but my results came back negative for STDs. I just had a bad yeast infection and an uti. My question is..... is it possible that I could’ve had a false negative test back then even though I felt the symptoms in June .......also since taking my antibiotics, it’s been the 4th day after and I’m starting to feel symptoms. I’m having discharge with smell. But these didn’t start happening until after I took the antibiotics. What is happening ? Should I go back to the doctor ?