Sick Guniea pig I think??

Question
Hi-So happy to find you! My guniea Peanut has had blood in her cage and I think it's when she goes pee.  She will be 8 yrs old on Christmas, she has no sores anywhere unless it's coming from her mouth but looks more like when she urinates, bright red blood just started in the last 24 hours (just small spots like a dime) , her sister of 7 1/2 years just died also in her sleep.  So I don't know what's wrong with my baby Peanut though and can't find any info on the web unless I buy a $30.00 book.  If you have any ideas or experience with this I'd sure appreciate any advice.
Thanks So Much!
Shari Stafne
Superior, WI

Answer
Sounds like she has bladder stones or a URI, both can cause blood in the urine. You need to get her to the vet ASAP. She is in great pain. Since she is 8 years old, it would probably be best to have her euthanized, but if you want to have the vet try to treat her, go ahead.