What Causes Pain In Testicle And Premature Ejaculation?

Hi, i have 2 problems which i wanted to take your opinion:
1. I have been having pain in my testicles (generally the right one)for a few months now. Its mild but frequent. Had a similar pain in 2003, but was more intense then. Recently visited a doc and he checked/confirmed i did not have any hernia types development.
2. I have been married for 4 years now, with a reasonable sex life. Recently i have started ejaculating much sooner than earlier. Last 12-18 months we have not had much sex (wife was pregnant, now a 8 month old son), and i masturbated often. I also notice that the general erection size and intensity has reduced. In fact my erection has overall reduced by an inch compared to a few years ago. Will home based exercises like Kegel and Start-stop technique help?

Please advice on the above
Rahul