Anxious

Hey guys! So I am expected to start AF today but no sign of her so far (YAY)!! It's very unusual because my periods are like clockwork right on time every cycle. I have been having some mild cramping earlier this week and on and off this morning but nothing else. I am anxious to test but I don't want to be disappointed by a negative result. I am thinking about giving it a week and wait to test but I don't know if I can wait that long lol. Any thoughts or ideas?