I just got my big pack of 40 opk strips from amazon. The directions say to test once a day, but not fmu. A lot of what I've read actually recommends testing twice a day. These are the strips that you dip in a cup of urine and then wait to read for 5 minutes. How am I supposed to do this at work? Sit in the bathroom for 5 minutes waiting for it to give me a result? What did other working ttc ladies do?