CM changes during early pregnancy

I’m not positive that I’m pregnant because I haven’t had a chance to test but I’m experiencing a lot of the early signs of pregnancy. One thing seems strange to me though.. I had a major increase of cervical mucus at first but after awhile I had a sudden decrease leading to dryness and itching. I know this can happen after normal ovulation. Has anyone experienced this during their pregnancy? Or does this mean I’m not pregnant? Tell me what you know! I’ve never been through this before so I’m still very unsure about all of it.