I found seeing pregnant friends and friends' babies hugely upsetting for about 3 years after my abortion. I definitely understand how confusing, disorientating and just plain heart-wrenchingly painful seeing friends being pregnant and happy can be! For myself, and I know that I made the 100% right decision to have an abortion, it opened a gaping hole of grief every time. Disenfranchised grief though, cause I hadn't lost anything except possibilities... the best way I can describe it is imagining how it feels to prepare to be given a heavy object, and then never being given that object but always physically waiting for it... it's a weird, sad, empty feeling :(
It gets easier though. Much, much easier. The first time caught me by complete surprise but it got less and less painful, until now what I feel is 99% happy for my friend and only 1% sad for my never-child.
For myself, I acted out of love for myself and my future children because all our lives would have been incredibly incredibly hard if I'd had a baby at that point in my life. I still get a little jealous when I see big pregnant bellies, but I know I'm fertile and that the right time will come.
Definitely find someone who you feel comfortable talking to about how you're feeling right now. It helps. A lot. In the interim, know that you're not alone in how you're feeling :)
Also, in Australia we have the concept of a Mature Minor. If you're over 14 and demonstrate the ability to understand the risks and benefits of counselling you have the right to consent yourself and for confidentiality to be maintained, even with your parents. If you have a counsellor already it might be worth checking in with them about what the limits of your confidentiality are, because they may not be legally allowed to share things with your parents without your express written consent. Wishing you luck!