Milky CM? BFP? Anyone?

✨Sarah✨ • I`m 29, married for 6 years (together for 11!) and TTC #2. We have a gorgeous 5 year old girl who is starting kindy soon
So a lot of women in here are describing milky CM and wondering if it's a pregnancy sign. My AF is due in 4 days, I got a BFN yesterday but I've been having milky CM for 3-4 days now... Has anyone had this milky CM before their BFP? I might be grasping at straws here lol