ok theres a few things that have changed with me and my girlfriend and im not sure why..

ok, just a guess, weve had sex maybe 20ish times? and the first 5 or so i lasted around an hour without stopping at all to delay my orgasm, but after that its been more like 5 minutes..she does orgasm, more than once i might add, but its still a little frustrating that i used to be able to last so much longer..we use a condom every time and i havent done anything significantly different so im not sure whats up..

another thing is that when im fingering her, when i rub her clit, up until a few months ago i was able to make her orgasm pretty easily with no problem, but now i have to stop because she says it tickles her, ive tryed a few different things like rubbing around it but not acctually hitting it, ive tryed differnt pressure and rubbing with like 4 fingers along it and just the tip of my finger or something, and it still tickles her.

i guess im trying to figure out what might have changed in either of these cases and what i could do to help. thanks