This is one of the joys of owning an unspayed bitch! Fortunately the dripping should only last for about a week, so I would confine her to the area where you can clean it up easily, or maybe get a cage so you can have her in your bedroom at night if you want her with you. You could try putting a plastic sheet under the 'throw 'on the settee in case it goes through.
You can buy a sort of 'nappy' type thing to put on her, but I am afraid I don't agree with them, they usually pull them off anyway and seasons are a part of dog owning.
Please remember she wll be attractive to dogs for anything up to 4 weeks, so don't think you are ok to let her off in the park, or let any other dogs near to her until you are sure she is over it, or you may end of with an unwanted litter. She will be just as keen to get to the dogs, so make sure your garden is secure!
If you are planning on having her spayed then about three months after the season is the best time.