My beta pregnancy blood test was 11 on friday & the doctor wants to retest on monday. used home pregnancy tests which are almost gone. not pregnant?

Not necessarily: A home pregnancy test won't be positive until the HCG level is > 30-50 (depending on the test) So when your blood test Hcg level is only 11, a home pregnancy test isn't helpful. Monday isn't far off. Get your blood drawn again as your doctor recommended. This is the best way to know if you are still pregnant. Best wishes.