What's going on

Keneshia • Mommy to be, 22 years old
Ok so I have been cramping and when I use the bathroom my cm was pink and now I'm spotting my period don't suppose to come on until Sunday but I have been trying to conceive for months now. I know before my period come on it be brownish like than it will come on but now it's just spotting and I'm cramping. What's going on?