Blob of jelly??

Okay so I'm really trying to find out where I'm at in my cycle. They've been off ever since I came off birth control. Last week I had really watery CM, then on Sunday, a lightly yellow or brown tinged blob of what looked like jelly came out when I wiped. Then progressively over the last couple of days has gotten thicker and creamy and white. I took a test today and got a BFN so I'm just curious if anyone gets these types of CM at a certain point in your cycle? All input is appreciated 👌🏼