10 to 12 days after the onset of my last period, I have the exact same symptoms of bloating, pressure, and gas in my lower intestine. It occurs simultaneously with a pain in either or both of my ovaries, and relief doesn't usually occur until a day or two later. I can have bowel movements during this time, but the pressure doesn't usually go away entirely. I'm thinking there is a hormone relation to these symptoms. I've researched IBS, but it doesn't seem to fit entirely. I'm very rarely constipated, but have recently been told I am low in iron and anemic.