SORE BOOBS 😩😩

Briana • Expecting baby #1 after trying for 6 years and using Glow for 1 month!! 😁
My breast have been feeling soooo sore and tender and heavy for about a week and never been this bad for so long and it's only getting worst. Like if I lay down on my side I literally have to move my boob to avoid laying on it because it hurts 😩😩.. my boyfriend and me would play fight and he used to be able to lay on me but now it's so painful..  My period isnt due until May 3.. I've had some sex of course because I'm TTC but I doubt this is pregnancy related .. thoughts?