If I reissue my last check then will google send it instantly? My other question is, If I got my lost check in this mean-time then can I use it?
It will not reissue instantly. They will cancel the check once they receive a request from you. It will take around 15 days and if they do it before 15th of the month it will be issued to you in the next month, else you need to wait for one more month. If you have not reported your lost check, you can reuse it.
Once you re-issue a check, the other get cancelled. Then it can take up to a month to receive the new check. I've had to do it twice now. Look for it again, and if you cannot find it, re-issue it.
do not submit a stopped check, else your bank might charge some fees on it... you will have to wait for a month atleast...