Premature ejaculation. Can i do now?

Pankaj from pune maharashtra When I put it in, I get discharged in 5 to 10 seconds.  When I try to insert it, I feel the sperm coming out.  The tip of my penis is also sensitive.  But the brain is high .., I tried to control but I can not.  As soon as I put it inside, the brain was ok.  I used Sense Resist spray but it didn't help to hold it for just a minute.  History 1. A 8 to 10 years ago, masturbation 2 to 3 times a day was more prevalent for about 3 to 4 months.  2. I was having the same problem even though I had an affair with my girlfriend for 2 years.  3. I have been using tobacco 3 to 4 times a day for the last two years.  To a lesser extent.  4. Drink and smoke rear.  5. 3 to 4 years ago I had no addiction.  Now I am under stress whether I can cure premature ejaculation or not.  I take homeopathic medicine from doctor for 1 month but nothing works, only expensive medicine and problem as it is, So I broke that treatment.  What can I do now?  Expensive medicine👎, edu.. dr only