[mrflibble]

Didn't Kim say she'd been feeling sick for a couple of weeks? I'm sure she'd only slept with Steven about a week before she left. I just read this on a site:

When is it likely to happen?
An ectopic pregnancy is most commonly found between the fourth and tenth week of pregnancy; symptoms often start about two weeks after a missed period.

Why does it happen?
The fertilised egg normally spends four to five days travelling down the tube from the ovary to the womb where it implants and begins to develop. The most common reason for an ectopic pregnancy is when the fallopian tube has been damaged, and this causes a blockage or narrowing which prevents the egg from reaching its destination. Instead, it implants in the wall of the tube.

Doesn't sound right to me.