3 vfp, then a negative, then a very faint positive again?

Ta

So AF is 7 days late. First day of my last AF was December 24th. This past Sunday I took a test in the evening. It was vfp. Monday morning I took another test and it was vfp. Last night I took my third one and it was vfp but easier to see than the others. This morning I took another and it was completely negative. Got my blood drawn this afternoon. Decided to go ahead and take one more this evening and it is vvfp(I had gone to the bathroom about 2 hours before this test though). Has anyone experienced this? Am I just to early or...... is this a chemical? ☹️

Sunday evening

Monday morning

Tuesday evening

This morning

This evening.