I always check my bbt when waking up at my alarm at 5:15am. But the last week or so I have been briefly waking up at 3am to 4 am enough that I start tossing and turning in hopes of falling back asleep. But when my alarm clock goes off I'm super hot and and decide not to check it because I assume the reading is off anyway. Should I check at whatever time I wake even if its 3am or do it at the usual 515. Anyone have this issue or advice?