Missed period but negative test.!!

K

Soo my period was suppose to come on the 29th. Usually before I start I’ll cramp.! I’ll spot but this time absolutely nothing.!! I went to the doctor she said my sample had a little dot of blood but to the natural eye you wouldn’t see it.! Also four test came back negative.!! I don’t know what to think or anything.!! My husband and I haven’t been trying for a baby but we really don’t want one right now.! But we okay to take care of it but like I’m kinda freaking out cause I’m about to enter school and idk just nervous. But my doctor said wait a few more days because today is just the 30th but me knowing my body Mother Nature is no wear close.!!