M.H.
I had something similar happen to me a week after both c-section births. The only time in my life that it's happened but I couldn't see from research that others had the same problem post-pregnancy. Doctor prescribed a topical antibiotic the first time and the problem resolved itself within a week. The same treatment worked for me the second time as well. My finger tips especially around the nail edges were swollen then cracked and peeled. Definitely strange. I hope you can see a doctor asap, The numbness is concerning.