10 days late

Megan

I've taken multiple pregnancy tests and they've all been negative I had a doctor's appointment today to test and it was also negative. Ive been experiencing lower back pain light cramping tender nipples swollen breasts nausea throughout the day. my period is always ALWAYS on time so this is out of the ordinary. me and my boyfriend has sex every day I was ovulating. is out possibly to early or am I crazy.