Thanks for your query.Based on the facts that you have posted it appears that you have problem of premature ejaculation
and have been taking Confido .
Confido is an ayurvedic drug used in erectile disorders and premature ejaculation and does not have side effects.However there are no positive scientific data to prove it's claim.
In Absence of any major health issue cause of premature ejaculation is mind related and due to performance anxiety .Following measure will help you to boost up your confidence and getting good erection.and delay ejaculation.
1) Practice regular exercise for 45 minutes followed by meditation
for 1/2 an hour in the morning.
2) Take high protein diet rich in vegetables and fruits and Vitamin A
3)Take anti oxidants like Almonds 5-6 everyday..
4) Avoid alcohol and smoking.
Please take your wife in confidence as her co-operation is equally important to resolve your problem of getting premature ejaculation.
Consult qualified urologist
to learn to modify sex techniques like start and stop technique or squeeze technique .
As regards your query for medication to increase the size of your penis please note that there is no medicine that can increase the size of penis,