It all depends on whether you grew up in an environment where losing virginity, acting promiscuously meant instant popularity. Usually among the less intelligent, less attractive crowd that's usually how things work. If being a virgin meant instant embarassment and the only solution was to either lose your virginity or like many others, pretend you had, well you definitely felt the pressure.
Outside that mentality (specially made for the not-so-attractive crowd), it's normal to not want to have to wait forever to lose your virginity, if just out of curiosity! If (like myself), you grew up with people who had something going for them other than their burberry cap and their moped and their ugly face then things are different. Going around saying you had lost your virginity, only got a bit of attention. If you were a virgin, you stayed quiet about it, distorted the truth a bit or simply were honest. The only real pressure was that you wanted to know how it felt more than being able to go around telling people you'd screwed around.
I know loads of attractive and intelligent people who lost their virginity far later than all the unclassy people. Even well into uni. Sure some simply lacked confidence to just go ahead and lose it with the first person but many just wanted to make sure things were right. They weren't waiting for prince or princess charming. They just wanted to let things take their course: first have their first relationships, then see if they felt like getting intimate. Finally, when they felt comfortable in their relationship, then they went ahead with it. That's very different to the mentality of people who just want to jump all the steps, lose their virginity so they can tell their mates and then wonder why noone wants to go out with them.