Several positive urine tests - negative blood test?

Autumn • mama to one little boy 10.09.2017 and one little girl 12.7.2020

I have had several positive urine tests over the last few days - including last night AND this morning. I have been nauseous, my breasts hurt, and super exhausted.

Yesterday I had my blood drawn and it came back negative.

Has anyone experienced this? I am just so confused and feel like I am on a roller coaster of emotions right now.