Test came negative BUT hear me out!!!!

I had unprotected sex some day in the beginning of August (took a plan b within 2 hours) I usually get period every 28-30 days but this time around it was around 45days August, 35 days September ,35 days October period… I’ve had symptoms tiredness, nausea, headaches I’ve taken around 5 home pregnancy tests all negative went to the doctor and they did some blood test (didn’t check for pregnancy) and said everything was normal (they thought I might of had anemia because of the symptoms) but everything came back normal , EXCEPT I have pre diabetes and high cholesterol something that usually happens to my family members when they’re pregnant