How many of you tested positive after missed af and when? 😫

I’m two days late for af😫 so exhausted and some light cramping and back pain for about a week or so, last time I was late I tested positive and was already 5w4d but my line wasn’t extremely dark that ended in a mc at 9 weeks. Maybe I just produce lower levels or something if that’s possible my last few periods since my mc are always on time. I have blood work Thursday I’m so scared for it to be negative. How many of you guys tested positive after missed af and had all negatives leading up to it?