Everyone has given you lovely advice and you really should try to take it on board. A termination can be a very traumatising thing, clearly, you haven't had enough counseling. Phone your local Family Planning Centre, explain to them that you had a termination 3 years ago and feel that it is still effecting you and ask them to set up an appointment with their counselors. It's a free service but if they wont help you, you can receive free counseling at your doctors surgery.
If there were no complications during the procedure then there is no reason why you shouldn't go on to have children. I had a termination as a teenager myself (a silly mistake) and then had another one when I got pregnant whilst on dianette and also steroids for asthma, so really felt I had no choice. I have two healthy children and many, many other women do go on to have bouncing babies after previously having a termination.
Make sure you practice safe sex until a time you do want to have children as there are of course silent diseases that could effect your fertility.