Dog & Period!! Help!

Carlota • Everything that shines ain`t always going to be gold.
This is my first time having a dog and she's my baby!!! We were going to have her spayed but she's not even 1 year old yet, we were going to wait after her bday but she just started her period! When can I get her spayed? What to expect? Today's her 2nd day! She wear diapers so it's okay but I just want to know what to expect, when can I get her spayed, how much will it be and how long will her period last? Thanks!!!