Sexually active, 1 partner, recently i noticed after we had sex my urine was strong, no itch or burn, smells strong for 1 week now.first time happening.

Difficult to diagnos: It's difficult to diagnose urine based on smell. Sometimes smell means infection, sometimes it means dehydration, sometimes it can be due to what you've eaten/drank. Without any labs, it's impossible to tell. You may consider getting a urinalysis and/or std check to be certain.

Here are some ...: Smelling foul odor in urine needs to be checked with urinalysis from properly collected urine so to avoid contamination, which is common in females. If UA is normal and you void comfortably with good steady flow and feeling emptying, you are okay; your disliked urine odor may be just uniquely personal without clinical implication, but likely reflecting what you consumed. So, seek counseling...