What Are The Symptoms And Treatment For Chlamydia Infection?

Hi, I am a 19 year old female. In November I was experiencing burning while urinating after having sexual intercourse. I got tested and learned I had contracted chlamydia so as soon as I found out I got treated for it (my only symptom was burning urination). After a couple days the burning stopped but I still felt burning but only after I was done urinating and the feeling stayed until i went to urinate again. I decided to wait and give it time and I got retested for chlamydia/gonorrhoea about 5-6 weeks after and it came back negative. I also had numerous UTI tests which came back negative, i went for blood test about a month ago for other std's such as syphillis, hpv, hiv,etc. and it came back negative. I did have a polyp when I was about 13-14 years old which had fallen and was almost ¨hanging out¨ of my vagina but it had never bothered me so I never had it removed. I still have the burning sensation after urinating and not during, and a small pressure on the bladder so maybe it's related to that. I went to see my family doctor and she did a urine culture/pap test and nothing came up and she did not see anything abnormal inside. I'm just panicking because the partner I was with at the time was unfaithful and that's how he contracted chlamydia and passed it on to me. Is it possible I would have another STD even if my blood work came clear? I've been panicking so much and stressing over this!