Welcome to HCM.
Your problem is likely to be due to inflammation over the fore skin or/and glans penis
This may be due to either an yeast infection subsequent to the antibiotic therapy or may be due to a drug allergy
caused by Tab, Aceclofenac
The treatment is entirely different for these conditions.
If you consult your physician,he/she will be able identify the problem and if you take the appropriate treatment you will be alright and you can have a pleasant sex.