Can A Circumcision Gives Pain In Night Erection ? Is

Can a circumcision gives pain in night erection ?
Is there any new circumcision technology for less pain and less stitches??
Can I intercourse after 1 month of circumcision?? How much time it take to heal and make my penis normal so that I can intercourse with circumcised penis..
And plz tell me the testical exercises to increase semen..
My erected penis size is just 4 inches.. Should I marry??

Patient's age: 26