I just adopted a 3 1/2 year old female dachshund named Honey. I have only had her for a few days and when I adopted her she had not yet been spayed. I plan on having her spayed, but before I could get her in she started showing signs that she was in heat or is getting ready to go into heat. Can anyone tell me what the signs are that she is in heat and how long it lasts? Do I have to wait to get her spayed until after she has finished? Thanks!