Is having bloody mucus from your nose a sign of pregnancy?

No, it's a sign of dehydration. You need to drink more water. Or a sign that you have been picking your nose. Yes, you are dehydrated and many people can get this way during heat waves or even when the cold weather comes and the furnace is on. Leave bowls of water around your home (decorative bowls if you like) and you'll be utterly amazed at how quickly that water evaporates. It's a good thing, so keep filling those bowls up with water! You should also be drinking 8 - 8 ounce glasses of water per day!