AF is late but no BFP!

Currently on CD35. I'm usually a 30 day gal. No pms/AF symptoms but have had very painful boobs/nipples the last 6 days and the only time I've felt this pain was when I was pregnant in April (the pain started from the day I missed my period) but I had a MMC. My CM is also the same as when I was pg, clear/yellow jelly-ish. And I *think* my cervix is high, not 100% I'm checking it right as I don't check it regularly! Tested this morning but got a BFN. Feel like I'm in limbo!