Has anybody had this????!!?!

Fehimahrustic

7 days late never happened before only 1 or 2 days not 7 days i went to the hospital to get a blood work and urine test done both came negative i had sex one day before my period and now iam late 7 days today my breast hurts and headaches and feeling lightheaded i got and unltrasound done too nothing at all everything looked great only thing was thick utreas lining but he said thats not a big problem its common to all females so i dont get it THIS NEVER HAPPENERD BEFORE ONLY WITH MY FRSIT KID HIS 8 MONTHS ON 10TH so please anybody go threw this because iam worried to the fullest