My girl is on her first heat as well! She is a hot mess! She has a very heavy flow, and she is a long stock coat. She did not tolerate doggie diapers. she shredded them. She has a strong odor as well, UGH. I had to shave her down a bit as her long floofies got matted with her menstruation. I try to bath her every other day. Unfortunately she is spending a lot of time crated. I give her lots of activity toys and get her out to exercise several time a day. She can not be loose in the house as she won't keep diapers on. Every dog is different so hopefully your girl tolerates the diapers. She is on her second week and her flow has slowed down a bit but now I am dealing with keeping her and my 5 1/2 month male separated. I am taking zero chances! NO PUPPIES for Athena! So when one pup is out the other is away in their crate. A lot more work for me with keeping my beasties safe.
Good luck with your female, hopefully her heat will go smoother for you!
Athena- Long Coat GSD -CGC
Sinister Black- GSD