Suggest Remedy For Pain In Penis While Doing Intercourse

I am a 27 years old boy. I tried to have sex with my wife. This was my first sex in my life. I was unable to insert my penis inside her. I tried nearly 4-5 times but I failed everytime. The problem was the pain on tip. I know that girls feel pain during first sex because of seal but not only her, that time my penis was also paining in the same manner while inserting. I Why my penis was paining on tip...? After trying continuing small pain that full day..Is this penis pain is normal to boys...? please tell me doctor everything in detail.......