Geez, Peke - I'm sorry I haven't seen this post until now! I tried the calcium carbonate, and yes, it worked! I was taking only one a day, so I started taking two a day about 2 days before my period was expected. Well, my period was 2 days late, but whatever......it still worked! My bowels were a little loose, but no D, so I'll be doing this every month now. Both calcium carbonate and calcium citrate have worked for me - my biggest problem is remembering to take it, that's all. Good luck, dear - I hope you find success with this too!------------------"We can't become what we need to be by remaining what we are."-----Oprah WinfreyMissycat