should I be worried?

Mrs. B
The first test was taken with second morning urine on Monday. Later that evening I took a CB digi and it said pregnant before the time was up. The next two tests were with fmu on Tuesday. I was worried that they weren't getting darker so I took another digi, it also said pregnant. The next two were fmu Wednesday morning. They seemed a little darker. The next two were that from that evening, urine was almost clear. I feel like I can still see a faint line though? The last was fmu this morning. Still doesn't seem to be getting darker. Do you ladies think everything is ok?