Hi @babyur4me, I also have cold feet but sometimes it's hard for me to distinguish the cold from the numbness. I also wear ankle socks to bed and use a heated blanket which helps some. It's cold where I live during the Winter so I normally wear two pairs of socks which helps a little during the day. I have lymphedema in my legs so have to wear knee length compression socks which I think adds to my problem since they are really thin and make the numbness worse. I also saw a vascular doctor who determined the blood flow to the legs was OK and then I had a lymphoscintigram to test the the lymph system in the legs. I didn't have any blockage which is what they were looking for but it wasn't working normally hence a prescription to wear compression socks which helps with the swelling.

Do you have an appointment setup with a vascular doctor? Hope you can update us after your appointment and you find some answers. Here's a link to Mayo Clinic Lymphedema Diagnosis & Treatment page:
https://www.mayoclinic.org/diseases-conditions/lymphedema/diagnosis-treatment/drc-20374687