A symptom of Chlamydia is painful urination. Does that mean burning during, or burning after, or both?

Both...but it could be a urinary tract infection, or even a kidney infection. What makes you think it's the clap?

if you think you could have it you should go get some blood tests done. Otherwise sounds like a urine infection. go to the chemist and get some Ural or something, but should see a doctor
Both or either.
DEAR FRIEND ,WHAT YOU METION SOUNDS LIKE A URINARY TRACT INFECTION (COMMON) THE DOCTOR WILL GIVE YOU MEDS TO CLEAR THAT UP FAST ,WHILE AT HOME DRINK PLENTY OF CRANBERRY JUICE TO KEEP THAT AT BAY ALSO DRINK MORE WATER,SO YOU WONT GO THRU THAT AGAIN. GOOD LUCK.
IT HAS HAPPENED TO MY SPOUSE.ONLY ONCE IN OUR 21 YEARS TOGETHER.CHOW
I haven't heard of std being painful during urination. It seems more likely a kidney problem.
If you have any burning, you need to get checked. Not everyone has the same symptoms for the same infections. The most important thing is not to wait to get treated. Obviously you want to refrain from sex until you are checked and treated.