Thanks for your query.Based on the facts that you have posted it appears that you had UTI very recently which has been controlled with antibiotics,
However you have stinging in urethra
and there is discolouration of external urinary meatus
. The pain in penis and meatus is due to urethritis
which will take few more weeks to get cured.
.If you have any problem like poor stream or straining while passing urine then consult qualified urologist
for clinical examination he may advise you to get your Urethrogram done to rule out post infective stricture of the Urethra.