Woah there.
What you should be doing is using an "eject" or "safely remove" function of your computer before you physically remove the MicroSD. For windows you should be able to right-click some USB-looking symbol in the bottom-right of your screen when the MicroSD is in and choose to eject the reader. That or right-click the drive in "my computer".
If you don't do this first, there's a chance of it corrupting.
What you should be doing is using an "eject" or "safely remove" function of your computer before you physically remove the MicroSD. For windows you should be able to right-click some USB-looking symbol in the bottom-right of your screen when the MicroSD is in and choose to eject the reader. That or right-click the drive in "my computer".
If you don't do this first, there's a chance of it corrupting.