normal-donot worry. donot try to rub too much or massage
ur penis, u can go slow.
involve in more fore-play. use partner-on-top position for the next one month and donot worry about anything else.
u can also put cold
water splashes onto ur genitals for 10 minutes twice daily.
u can use regain powder 1 tsp twice daily with milk.
shapes and erection of penis also varies from person to person.
pls revert back. sex is in the mind. u can take few sexual counseling sessions.