Doe's first litter all dead, need advice

[SA Farm]

At nine weeks they should be pretty easy to tell. Simple thing to remember is circle boy teardrop girl. If you can take some clear, closeup pictures and post them, I'm sure the rabbit people here can tell you for sure one way or the other
I would definitely recommend doing a breeding chart. If you number your cages, you can locate your does/bucks that way until you get your tool.