So confused

My period was supposed to start 10/26 & still no sign. I have taken 4 FRER each on different days, and one off brand test. I have gotten a vvvfl on almost all of them, but there’s two that ladies on here have said they are indents. I don’t even know what to think. Is it really likely to have ALL indents? The line isn’t getting any darker, I didn’t test today but plan on testing tomorrow. Thought about going to the doctor to get a blood test done but don’t want to waste the time/money. According to my last period I would be about 4 weeks, so I know it’s early but I feel like the line should be getting darker. I just don’t want to get my hopes up to be let down😔