Some individuals agree that it does delay the ejaculation as it 'dulls' the sensation although there exists thin 'sensation' condoms that counteract this. As for how long that would depend on the individual however there are 'exercises' that can help delay an orgasm.
As long as the semen is contained in the condom and none leaked out, then you should not be pregnant,
yes it is safe just as long as the condom is well lubricated and you go slow
Check out different condom boxes. They normally have a guide on them!
A few hours
unless there was a condom "malfunction" ,, never,, that's sort of the point no?
half dose of what?
As long as you are using a condom properly.
About 6 months.
no
Tie it off with a rubber band. Hang by the tip.
you dont use a condom and you hump it all night long
on what?