invalid home fertility test

Jess
My hubby and I just took an at home fertility test, we've been together 7 years & have been trying to get pregnant off and on (due to the emotional stress) for the last 5 years. We decided to try the home fertility test to see if we needed to focus on ones health more than the others. His was positive (yay) mine was invalid....has anyone else had this happen? I did everything the test said and there was nothing in the windows 😞