Ever since I had was pregnant with our daughter, I've had a constant urge to freeze time. Everything changes so rapidly. But that's what cameras are for, right?

Being pregnant felt simultaneously crazy and brilliant, like I was a scientist experimenting on my own innards but also a mythical, magical goddess. I had moments feeling like I was glowing with some sort of celestial light, and others looking like I'd been hit by a truck and dragged through a ditch. It's the most ordinary thing in the world but also the wildest thing to actually do – the whole thing's really heavy on duality. Pregnancy takes over your body and your emotions and quite a lot of your life… and then it's over and you're on to a whole new stage of ever-changing weirdness and your body's a whole new being that more-or-less resembles the one you had before but not quite.

Basically, it's a big deal, and it's worth documenting. It doesn't last long; let's take pictures (I'll bring my time machine).

Bella and Becky: London maternity portraits at the mondrian, shoreditch