[Brandye]

All of us are a bit scared of the first time and we each spend some time trying to determine if we are physically capable.

Your three and a half inch finger is misleading. Our vaginas are really quite small until we become aroused. During sexual arousal, the vagina both elongates and broadens - a bit like a balloon. More than 95% of all vaginas comfortable accommodate 95% of all available penis. The little tube thing you feel is your cervix. Again, when not aroused, it is not very deep.

Find a good diagram of the internal and external female reproductive system, a mirror and a good light. Sit on the edge of a bed or whatever and get yourself figured out. Given that your activity has removed all traces of your hymen, you should have no difficulty.