Aw, I feel you, breast tenderness that long is really frustrating, lalo na when you're in that two-week wait! Honestly, it can be normal (progesterone does that), pero 9 days of ongoing pain is worth mentioning to your OB kasi it could be hormonal, or sometimes there's something else going on na kailangan i-rule out, especially after trying for 4 years and you're probably monitoring everything closely. I'd get it checked just to be sure and to have peace of mind, because you deserve to know what's actually happening sa body mo.