14 days past ovulation and 2 days past missed period

Rachel
14 days past ovulation and 2 days past missed period. I got a BFN this morning. Can I be pregnant? I have nausea all the time, small cramps, (TMI) diarrhea.. some lower back pain... just trying to figure this out. I'm new to the cervix position but I think it's low? And CM is clear color I'm new to CM too.