Why not double up? Where are simple washable cloth mask first, with disposal mask with better filtration on it (N95?) on top. If you are not going out much, the disposable one will last weeks this way.
But if you're sensible, keep your mouth and nose covered and keep a safe distance from others, you should be OK whatever you wear. Just make sure you wash your hands, and then your face after hands or sanitised, when you get home. Hang masks up and the virus should die off in a few days if there is any. In the summer I kept mask and gloves on the dashboard so the sun would sanitise them. Sunny windowsill a good place now.