Just stopped bactrim (sulfamethoxazole and trimethoprim) for ecoli infection. now have whitish frothy discharge - no itch, smell, redness. is this normal, still infection, or yeast?

Frothy--not normal: Your description of "frothy" white discharge does not sound normal. Certainly any antibiotic can alter our normal bacterial environment triggering abnormal bodily functions--ever get diarrhea from antibiotic use? This has created a growing interest in probiotic use. However, for now, you should best call your physician's office and inform them of this new development. You may need another test.

Follow up with doc: Sounds like you developed a yeast infection secondary to the antibiotic.Check with your doctor for follow up.

Yeast infection: After use of anti-biotics, yeast infection can happen. If the abx kill off the body's germs that typically keep the body's yeast under control, the yeast go crazy and over-grow. When a person needs to use abx, a yeast inf is often a side effect. Treatment w/monistat over-the-counter is as effective as rxd meds.