1-5DPO Cramping??

Jessica

Positive OPK last Thursday and continued until Sunday. Yesterday afternoon they finally switched to negative. Today I’m having cramping like crazy - nothing awful but definitely noticeable. CM is no longer EWCM so I don’t think it’s ovulation and too early for implantation right? If I did ovulate with first positive on Thursday I would only be 5dpo. Any ideas?!