Hi, I can understand the distress you are through. Regarding your question of penis size, a size of 3.5 to 5.5 inches is normal in Indian population. Besides, penis size id not Very significant in sex. If you practice healthy sexual intercourse, you may be able to enjoy fruitful sexlife. Early ejaculation could be suggestive of a problem of premature ejaculation. With suitable medications and instructions it can be completely cured. I will need to AK you detailed questions regarding the problem of weakness. Why do you feel weak?
Next Steps
My suggestion to you will be to consult with you is to consult with a sexologist in detail. For detailed instructions regarding the management you can consult with me directly here on practo.
Health Tips
Don't worry. It can be completely cured.