Ttc month 5, 2ww

This is my 5th month ttc and I feel hopeful this month :) . My boyfriends daughter (11) has randomly started insisting I'm preg and saying we're lying to her bc I won't tell her I am lol . I'm hoping it's a sign ! We haven't told her anything about TTC ! AF should be here on the 19th. I don't feel any symptoms of anything but I have a test in my cabinet and I'm not sure I can wait till the 19th to test but I don't want a bad reading ! Anyone else testing soon ?