My wrist hurts very bad I can't even lift a blanket when I bend it back my whole forearm hurts/when I push on my forearm wrist hurts. Its not swollen?

Pain with motion can. Be from tendinitis, joint swelling, bruising, ligament injury, fracture, mild arthritis iin a older person, or even fatigue and a little soreness from activity. Other things such as inflammation from infection, gout or other causes too can occur. Typical treatments involve ice, rest splinting , and over the counter anti-inflammatory medication but seeking care if symptoms do not get better.
Have it evaluated. There are several possible causes including issues involving the wrist or more likely a tendinitis known as a de quervain's tendinitis of the wrist.