Natural Conception During IVF

I found this story amazing. It's about a couple who tried for six years to have a baby. Just when they were going through a cycle of IVF (successfully I might add), they conceived a set of twins on their own at the same time and ended up with quads. Wow! What are the odds of that? This is another example of how natural conception can happen just when you least expect it! Read more:

'Surprise' quads prepare for birthday


From the article:

The couple spent six years trying for a baby before deciding to have fertility treatment.

Then, 18 months ago, the couple conceived one set of twins naturally - at the same time as having a successful IVF treatment.

Liz Corrigan, of Bristol University's Centre for Reproductive Medicine, said: "There can only be one explanation.

"When we put the embryos back, two other eggs, which must have been in her pelvis, fertilised and resulted in these other two babies.

"They were, in effect, a natural conception."