Morning all and Merry Christmas!
I starting using CBFM last month (an old version passed on from a friend), and all went well. This month it's been showing two bars from day 6 to day 21.
Last month I ovulated on day 12 and took Cyclogest from day 14 until a negative test, I'm not sure if this could affect it or not.
Has anyone had this before? Could it be the machine is faulty? Any advice would be lovely. Thank you.