Currently on cycle 16. I'm on CD 30 and my cycles are anything from 28-31 days. Today my stomach is really tender. I've had what I thought were period cramping. It it's now just sore all over. If I poke it it's particularly sore. My boobs are also quite tender but I can't decide if that's because nanny charge 4 keeps elbowing me in the boobs! Any advice appreciated although I expect it's just a wait-and-see type of situation!