Suggest Remedy For Penis Problem

Hi,I am Aravind from Tamilnadu. I used to masturbate for the past 10 to 12 years. I am 23 yrs old. My penis in flaccid state varies from 1.5 to 2 inches . Girth varies from 0.50 to 0.75 inches. When it is erect it is around 3.75 to 4 inches in length. I am very much worried. Is this size enough to satisfy my partner and make her pregnant when i get married in future?