Your assumption that you overdid it is likely right. I'm sorry you're hurting, Jermert.
Sounds like you entered the ODIC (Over Did It Club)
Resting and icing today, without exercising, is your best bet. Icing for at least 45 minutes each time you ice, should help.
Engage in the activities of daily living, as tolerated, until the pain and stiffness ease.
Icing for up to twenty minutes only is what most of us have heard or been advised to do following an injury. Following joint replacement, ice is a critical part of pain management and should be used not only on the joint, but any surrounding areas of discomfort for as often and as long as you're comfortable doing so, always placing fabric between your skin and the ice source. Icing helps bring relief from the soft tissue trauma and internal swelling. Icing is a great natural pain reliever and best of all, it's free. While some care providers do put a maximum time on icing, others suggest you ice as often as you see fit.
Icing after therapy, exercises, or prolonged activity that challenge ROM and endurance should help ease any discomfort, or preventively keep pain at bay. You may find relief through icing for weeks to months post op.
I hope you feel better soon!
@Jermert