Congratulations on your new baby! And good for you for being so dedicated to nursing your little one.
It's totally normal for your body to produce too much to begin with, then over the next few weeks it will regulate so it produces just enough. It's not a good idea to pump the extra because that sends your body the signal to produce more milk. If it is painful you can try to hand express or pump just enough to relieve the discomfort. Or if you want to start saving up milk for when you go back to work you could pick one time a day and pump then so you can get started on a stash of milk.
“We are not put on earth for ourselves, but are placed here for each other. If you are there always for others, then in time of need, someone will be there for you.”