With my first pregnancy I had m/s from 3 weeks right up until I birthed my daughter. I even had it in labour. It was bad, and I had to stop work at 24 weeks because of it.
With my second pregnancy, I didn't have any m/s at all.
It honestly didn't even cross my mind when ttc #2. I figured if I got it again, there's not much I can do about it. There's only a 23 month gap between #1 & #2.
I had m/s with this pregnancy between 8-18 weeks, so it was hard. But it's gone, for now.