This happens to me all the time now, more so with my advancing age. I use Firefox browser, which has a built in spell check. But it does not fix grammar, and it does not always flag medical words. I type fast, and often miss small words now. You will see me editing my posts quite a bit, sometimes, I see the errors days later! duh? At least as a mod, I can go back and fix things when others can't, here. LOL When people quote me though it embarrasses me to see a glaring error.