Sore boobage (oYo)

I'm telling you...every freakin cycle has been different. Obviously I'm attributing any changes this cycle to the new meds. After ovulation/IUI I have had sore boobies. I know it's not pregnancy related...I'm not even close to implantation at 2dpiui so I'm not under that impression. I have b/w tomorrow morning to check my progesterone. Hopefully I don't need to take Prometrium again because I know my boobies will feel worse then.