I'm uncut and have the "strand at the bottom" thing an all. It's no problem, man. Sounds from ur description that the skin is tight. U need to loosen it up by working it more backward (use some Palmers cocoa butter). Or better still work it back a lot during showering (and while getting it all clean underneath).

To avoid getting her pregnant (cause guys shouldn't just rely on the girl to take the pill) and to avoid STD's (sexually transmitted diseases) use a condom. I'd advise pulling the foreskin all the way back before rolling the condom on. U can get Trojan - XL at the local Walmart.

As for that pain thing, i don't know what that was about. If it comes back, i'd have it checked out. Don't sweat the women who think it odd looking, just as many will be intrigued. It's way better tho being uncut.

Finally, as with any "weapon" use it with care.