Friend help

Brittany
After informing my best friend that I'm pregnant she's been constant about trying to get pregnant. She's been taking test like every other day, and the sad thing is her hubby is away on deployment for three months. I don't know how to talk to her anymore. Everytime I try to tell her updates on my pregnancy I feel like I shouldn't cause she goes crazy on how bad her and her hubby want a second child. Or she just randomly told me she has signs she pregnant but took test and it says negative. I don't want to be mean, but she's not pregnant her hubby has been gone so she hasn't had away to conceive. What should I do? She's my best friend and I want to share everything with her but she's making it hard.