If you're feeling really engorged, then the weaning process likely went too quickly. I'd pump once or twice more, not enough to empty the breast, just enough to relieve the fullness.
I noticed your child is one years old now and I was wondering if you where stopping breastfeeding at a year simply because your you are under the impression that when your supposed to stop?
I just want to make sure that you know that you do not need to stop breastfeeding at one years old if you and your baby don't want to. Contrary to what some people claim, breastfeeding does automatically become nutritional worthless at one year old nor is it psychologically harmful to continue breastfeeding beyond a year. In fact, research has shown that there continues to be immunological benefits to breastfeeding till at least age 2.
Now you mentioned pumping and if you where only pumping because you had to return to work (i.e. you were not exclusively pumping) then I want to let you know, if you don't already, that it is not necessary to give up breastfeeding entirely just so you can stop pumping at work. After a year, you can hang up the horns so to speak (i.e. stop pumping) at work while continuing to breastfeed mornings and nights when you are with your child. Even just breastfeeding a few times a day still has benefits for your child.
You can read about the benefits of continuing to breastfeed beyond a year at the following link: http://www.kellymom.com/bf/bfextended/index.html
Regardless, the choice of course is entirely up to you as to how long you breastfeed but I just want to make sure your are making a fully informed decision.
My son is actually 16 months old and is not interested in breastfeeding at all. I was going to let him nurse closer to two if he wanted, but shows no interest.