Re: distance varies with excitement level.

Trying to move this over towards the middle.

Do a google.com search and type in Ejaculation problems. You can read it rather than me cutting and pasting it here.

Keep up with the Kegals.

I believe you are being satisfied better during intercourse by vaginal partial vacuum with kinda sucks semen out of your penis whereas your ejac muscle is not responding so much..
If you ejaculate more during intercourse than thru self-gratification, then I would be possibly right.

If you continue to have very thick semen, please see a urologist.
He can help you.

C'mon back.

You do not become permanently bigger with v1agra, only during intercourse and more so when you cllmax.