If it has been 24 hours, I don't think so. It's the same when someone sends you a sentence in the "chat" and you don't open it. It expires after a day so they can't see it.
It's highly likely. Excessive mucus is an inflammatory and thus allergic-reaction, probably to something you ate the night before. The top two suspects are wheat and milk, the two foods...
You may need to add the unblocked person as a friend again, and that person may need to add you back as well, depending on their privacy settings. Once you're...
The person has a reason for blocking you. You can't unblock yourself. This is about privacy and personal choice and you can't force the person to be your friend. You...