That's fair enough. I guess I'm talking outside of my experience since I wasn't around "back then". 
The small-community, gossip driven world (I myself only experienced the last few, terrifying, moments of it) was so much like a Jane Austin novel, in some important ways. Everything could depend on your reputation, the family you came from, the community you belonged to, and your status within that community.
And, to tie all of that into this thread, a young woman's life could be ruined if she gained a rep for having had sex outside of marriage. Not only could she no longer expect to marry a "respectable" man, but she was now expected to have sex with any man willing to pay for her supper and a movie. You can read old novels about women made social outcasts because of a single sexual encounter -- or even the appearance of one. Perhaps, though, those books don't convey how common it was for women to be made outcasts.
All that began to change, in the small town I was growing up in, with the arrival of rumors from the East and West coasts (and, to be accurate, from the UK, too) that there was this wholly crazy, entirely improbable, ridiculous revolution going on. I still can recall one of my more conservative teachers telling us it likely meant the end of the Republic and its conquest by Russia.
Do you think people are under more pressure to have sex nowadays, if so - what do you attribute it to primarily?
More pressure? Absolutely not! I differ from a lot of people in that opinion, I suppose. But I'll wager (mostly) men have been routinely pressuring women to have sex without any commitment since well before some of us domesticated sheep for that purpose.
One of the main things the Sexual Revolution did, in my opinion, is that it allowed women to retain their social respectability, their status, their marriage prospects, and even their employability, while indulging themselves in sex outside of marriage.
But did it increase the pressure on them to have sex? I seriously doubt that.
