Leaking watery discharge

In 4 days it says my "fertile window is ending". I'm just curious as to why I am leaking fluids. I have to say the discharge on my underwears white. . . but right I was taking down my pants to go to bathroom and I literally have clear watery discharge that is coming out, I actually seen it. What is going on with my body? Btw bf keeps saying he thinks he has low tosterone.. And we have unprotected sex and he doesn't always pull out and I haven't got pregnant yet, so maybe its me.

PS. Haven't been diagnosed with endo or ocos but I honestly think I have one of the 2 because I have the symptoms.