Is it possible?

Kaylie • 23yrs old. Prothomin gene mutation factor 2. PCOS. Rainbow baby #2 due 4-20-2020. Angel baby Loxley River 9-2-17. My Rainbow AviciiLynn Monroe 12-7-15. Angel baby Dakota Raine 11-3-14

is it possible to still be pregnant if I got a negitive pee test and blood test at the doctors?. Ive been feeling nauseous the passed 2 weeks and get sick smelling some food, cramping, boobs hurt off and on. im not sure what to do... im 13 days late