NEED HELP!!!

Jasmine • 25 Years Old ♉️, Married 👰🏽, Rainbow Baby Girl Was Born On 8/24/19 ❤️.
I went to check my cervix, and I barley had to put my finger in. I put the tip of my middle finger in my vagina, about 1 inch and on the top of my vagina inside I feel a hard round thing. Could that be my cervix ? I'm confused on what it could be. Feels weird andextreamly low, like almost coming out my vagina, that's how low it is.... 
I been spotting on and off all day today. Af was suppose to come today. 
Could whatever I'm feeling be because af is coming? I texted yesterday morning and got a negative pregnancy test. And just been having cramps and spotting on and off all day today. ( AF is due today) according to glow.