mini tt
It is not uncommon to have discomfort at the drain entry site, particularly when the drains are in for an extended period of time. If your surgeon hasn't seen it lately, he/she should in the event that there is a drain site problem. The color of the drainage does not sound alarming, but again, this would best be evaluated by your surgeon. Thanks, best wishes.
You did not mention what kind of surgery you had. Having drain 4 weeks post-surgery is normal. Having pink drainage is normal as well. If you don’t have fever and discharge green or yellow with smell you should be ok. Make sure you are keeping up with your PS.