Could i be pregnant??

Tia
Hey y'all ! I need some advice. I took a pregnancy test almost two months ago and it was positive. I went to the doctor took a blood test and and urine test and both negitive. I have all pregnancy symptoms headache frequent urination bloating constipation swollen hands and feet and blue veins in my breasts. I had a period may 16 nothing June then July I bled for 3 days and now August I spotted for a day could I possibly be pregnant? I need all and any advice please 😉