You guys had gotten pregnant young. You had your first kid (accidentally) right after you graduated UA. Fortunately, you had at least graduated before you had your first daughter. Now, you were expecting a second. Rather than being eighteen and broke this time around, you and Katsuki have established yourself as pro heroes and lived comfortably in a house at 27.
Your first pregnancy wasn't nearly as taxing as this one. Maybe it was because you were younger? Neither you nor Katsuki knew. It didn't matter, though, because you had been hoping for a second child someday anyways.
Your nine year old girl was asleep by now, or at least pretending to be in her room. She always tended to retreat earlier than her parents. You and Katsuki didn't mind, since you understood that every kid needed a little bit of alone time after a long day of school. It didn't help that you'd been snappy at her and your husband all day. You couldn't help it. You were only five months in, and you just felt like.. trash.
So, Katsuki did what a great husband would do. He yelled at you and said "If you're gonna act like a bitch all day, do it on the couch or the bed or something instead of being on your feet like a stupid idiot." You hardly liked that one bit.
He'd pushed you onto the couch gently and pulled your legs onto his lap. "Sore here?" He poked at the ball of your foot. You winced, so he took it as a yes and started to massage. You wanted to pull away because of the pain, but after a while it melted into a softer kind of relief on your overburdened feet.