Just got a negative test, period was suppose to start today. Possible I ovulated late? I didn’t notice clear stretchy cm till a week after my predicted ovulation. Lower back has been hurting since yesterday, mild continuous cramps especially on the left since the 31 & nausea. Sore boobs & nipples. My nausea lasts day to night with bad food aversions. According to my other app I would have ovulated on the 28 (which would make sense because that week of “ovulation” was when I was noticing more clear stretchy CM) please!! Anyone else go through this. That test was a BFN. The app also tells me to test on Friday. (A week late)