For the past couple of days I have noticed that when I sit too long and then stand up I get a some cramping in my lower right abdomen. It is kind of like a sharp pain that catches me for a few seconds and then is fine. I've already had my appendix removed so I know it can't be that. I thought maybe ovulation pains but with where I think I am in my cycle I should have already ovulated. Has anyone else experienced this or have ideas on what it might be? Thanks!