BFP turned BFN then BFP again 😱

M

May I please ask for your opinion on what you think this could be? Yes I know I should get blood work done to be sure, however I just switched my health insurance so I will be making an appointment as soon as I could but in the meantime, I’m so confused. Am I pregnant? Is it a chemical pregnancy?

Timeline:

Top test: Monday 5:30pm (FR early)

Second: Wednesday: 10:00am (FR Rapid)

Third: Wednesday 10:05am (FR early)

Fourth: Wednesday 1:26pm (FR early)

Last test: today (Sunday) 1:26am (FR early)

I know I should test with FMU but I’m thinking with a 5-day difference anyway my HCG should’ve made the lines more defined if it was a viable pregnancy..