I know you are only supposed to take your temp upon waking in morning, but I am so anxious during the 2ww. My period is due in 4 days. I took my temp a 2:30 on and it had took a dip. Does that pretty much mean it'll be down in morning too and will keep dropping and I'll get period? Or do temps in afternoon mean nothing? When my temps are high, they stay high in the afternoon though.