I have 4 year old twins, but I was told I was not ovulating so I was given chlomid to make me produce an egg. I only had to go through one cycle and I became pregnant. Over the last 4 years I have not been on any kind of birth control. I also have an older daughter where there is 12 years age difference from the twins. I am very confused on how I am now pregnant??? The only thing that has changed is over the past year I have lost some weight could that have been what triggered me getting pregnant??? How did this happen?????