Has anyone ever had the hook effect in early pregnancy?

I got a clear positive 4 days ago on a frer. The test line was a little lighter than control, but it was unmistakably there. Yesterday, I took another frer with fmu and there was a very faint line. Took another yesterday evening and same faint line. Took a fr rapid result (less sensitive than frer) this morning with fmu and I think I may have seen the faintest line, but it looked negative. Still no bleeding and still having pregnancy symptoms that are very different from my pms symptoms. I feel pregnant. My period is 5 days late, I’m guessing I would be about 5 weeks pregnant. Do you think that could be the hook effect? Should I try diluting my urine? I would have to go buy more tests because if I dilute it I want to take one normal then one diluted with same urine sample to compare