Sprained wrist recommendation

Hi thank you for stopping in to my post! Anyways I’m looking for a recommendation on a slight sprain I have in my left wrist.

I can’t afford to go to the doctor for something minor (no bleeding, swelling, or bones sticking out so not enough to justify the expense). There isn’t any swelling and I still have full use of the wrist. However I have lingering pain at rest and sharp stabbing pain while trying to lift more than 5lbs. I can usually lift my infant in his car seat single handed with either hand. At this point it hurts too much to bear weight on the wrist even using both hands. I have been using like the least invasive brace I could find to give my wrist some support. I’m afraid I’ll do more harm than good if I use a splint. Is there anything else that could help?