Suggest Remedy For Premature Ejaculation

HI Dr. I m happy That u r providing good things online and helping so many health problems. My problem is I ejaculate when I insert my penis in the vagina in 3 to 4 strokes. Can u help me to solve my problem I m 25 years old now. And i m marrying in 4 months. Plz help me to get it solved before my marriage.