Changes in cycle when ttc

J • 👶🏻💙Due Jan. 11, 2020 Baby Boy born Jan. 15, 2020 😇 March 2019 😇 March 2022 June 2022 😇

This month we were trying really hard, a lot of BDing and ended up getting my period. My periods normally last 6-7 days. This time I only really bled for 1 day. Does this happen a lot when ttc or should I be concerned? It has just thrown me off because I have never had that before.