Question

Just wanted to know what egg white stretchy cm with just a tiny bit of blood in it meant my cycles are off but glow says I'm four days late i haven't done opk testing lately but two days ago I did a opk test and it was negitive but like if it was almost going to be a positive or if i just missed my peak. Anyways for the past three days I've had watery slippery cm and two nights ago when i went to the bathroom and wiped I saw Egg white stretchy cm and had some blood in it ? What could it be? I've never had cm like that and no cramping or back aches like when I'm getting my period or about to start like i always do. If not i should have started right after that and I still haven't started

Two weeks ago I had very faint positive on tests but when I got blood work it was negitive so I don't think I could be pregnant just this never happened before and want to know anyone elses experience with this?