Sore boobs this early?

Krystelle • Married teacher of Religious Studies & History. Hoping for our first bundle of joy sometime soon.
How soon after ovulating is it normal to get sore boobs if you're pregnant? I usually get sore boobs 3-4 days before my period but I ovulated 3 days ago and obviously did the BD as much as I could and now I got really sore boobs! Is it too early to be a symptom?