Hi, thank you for asking healthcare magic I understand your concerns With this presentation, it is possible to think that your may be having urinary obstruction. This can be caused by an increase in the size of prostate or narrowing of the urethra. In my opinion, I would suggest you check your prostate again by doing an ultrasound and another test called PSA (prostate specific antigen). You do not need to change your habit. It is unlikely for coffee to cause these symptoms. I hope I have answered your query I wish you well