SD card not being detected by any device anymore

Today I tried sending someone an image on WhatsApp and every time I clicked the send button it said "Could not load photo" so I rebooted my phone.
After I did, a notification saying "Damaged SD card please reformat" appeared. I didn't want to lose any data so I turned off my phone, took out the SD card and put in my PC so I could backup and format.
But when I tried to, my PC didn't detect the SD card.
When I put it back in my phone, the "Damaged SD card" notification didn't show up again...

SD card not being detected by any device anymore

from Android Authority Forums http://ift.tt/2sZbYlt
via IFTTT