TMI...CM question

So this is for everyone...ttc'ers and those who have already gotten BFP's. I am cd21 and I think around 10dpo. The last few days I have had quite a bit of clear, slippery, non stretchy CM. I have noticed that for a couple days out of a cycle I will have a little bit...but this is crazy! My hubby has said something the last couple times we have done the bd. He said its never been this much before. Other than ewcm, I tend to be pretty dry and we usually have an issue with dryness when we are intimate. I caved and tested yesterday (fully aware it was too soon and I am crazy) and got a BFN. AF is due 1/31. Any shared experience with this type of CM is appreciated. Is this possibly an early sign of pregnancy???