I think my bad masterbation habit is the real cause behind this.

I am 22 yrs old guy and started masterbation since I was 15, I never had sex with real girl earlier, Now when I got a chance to boom with my gf, I started with full confidence but just after my first penetration I ejaculated, and my erection flew away, I was left with a big muscular but non erected penis. I think my bad masterbation habit is the real cause behind this. I tried again for the same without masterbating after a week , but this time I used a vigora 100mg pill and an extra time lotion,I continued for 2-3 minutes with my gf, but felt nothing on my glans penis, then ejaculated properly. I am very nervous as the problem I am facing is rare at this age group, I am single, So how can I continue like this after my marriage. Does prolonged use of pills cause harm, Is there any way to stay long without using pills, or satisfy partner till orgasm within a few minutes of intercourse. Please help, your every suggestion counts a lot to me...Thanks