You have to keep in mind that pheromones can only do so much for you. You have to be willing to carry them because they won’t carry you. It seems like the shyness may be an issue with self confidence. I was in the same boat when I was around your age, but made some positive changes and now I’m a completely different person. I created a thread a while back about getting over shyness, if you would like to take a look at it: Shy? Introverted? Don't worry about it :)