Am I doing something wrong??

So, my period has been late for 3 days, I tested on the day it was due and a few minutes ago when I woke up to use the restroom(it's about 4 am.) I have had quite a few symptoms but I keep getting negative tests, that's 3 so far that appear to be negative to me. Am I doing something wrong with the tests? Or is it correct? For context my cycle has always been consistent, and usually starts before the app says it will. The only time it was different was with the first 2 pregnancies (I had One miscarriage 4 years ago in Dec. 2018, and one in like Oct/Nov of 2020.) I am having fairly similar symptoms to when I found out I was pregnant back then. And honestly I'm just worried that something is wrong if I am somehow pregnant. I've been taking prenatals because my partner and I just had a feeling. But I don't know what to do. They want me to test until it's either positive, or I get my period. So I suppose I'll end up doing that. I guess I just want advice... Do you think I'm doing something wrong? Or that something is going wrong with my body?.