No period.. No BFP... Not many symptoms..😟

Shaina
I have no idea what's going on. Im about 3 weeks late and no sign of Period. I have off and on cramps, Hot flashes, and headaches. Plus my cervix has been high! I've took tests after tests and all came out to be negative. Has anyone been pregnant and take awhile to get a positive? Has anyone have rarely any pregnancy symptoms?Â