Just to add to my colleague @Marcos suggestion, I would strongly recommend you back up any important information stored on the drive, as it sounds like it has begun to fail. SSD failure modes can be very problematic in terms of data recovery, so it is a very good idea to make sure any type of information you have on the drive which is valuable to y ou is saved in one (or more) backups.
After you have gotten your important information backed up, check with the SSD manufacturer to see what diagnostic software they offer to check the drive, as that may provide you with additional information/insight into what is happening, as well as what options are available, such as replacing the drive under warranty, and so forth.
Demostenes Iturrizaga gave kudos to Aryeh Goretsky in Disk Errors during Detection Engine updates after Windows Update
