Salam! Congrats on the positive test! Breast tenderness memang very common dalam early pregnancy, a few of us mums experienced the same thing even sebelum scan nampak anything, it's one of the earliest signs actually. But sebab your scan kosong lagi, kena make sure dengan doctor whether it's normal pregnancy tenderness or something else, especially since you got that 3+ reading, just untuk peace of mind, you know how it is, first pregnancy semua nak confirm betul-betul. Jangan worry, most likely fine je, tapi better safe than sorry lah!