Hai, Welcome to HCM.
Your symptoms of urethral discharge and redness
of urethral orifice is very unlikely due to drug effect. You consult your Genito-urinary physician or a Dermato venereologist and check youself along with urne and discharge smear. This will give a clue to arrive at a diagnosis and the treatment aspect.
Possibility of Gonorrhea
or Chlamydia are there and to be ruled out. Blood Examinations of other diseases are to be planned after two months.
Emptying of your urethra by stroking the last few drops with hand is not unusual and not to worry about the same.
So consult your physician as soon as possible and get well soon.