How does Bactrim affect you after 3 weeks of treatment?

It sounds like you're looking for insights about how Bactrim might be affecting you after several weeks of treatment. Many people in the melanoma community have experience with various medications during their treatment journey, and responses can vary quite a bit from person to person. Consider reaching out to your healthcare team about any changes or effects you've noticed - they'll have the best understanding of your specific situation and can provide guidance tailored to your treatment plan.