Boobs hurting!!!

I am 7 dpo and it's been 9 days since last time we had sex. Im also still 8 days from my period being due, i never get sensitive boobs before my period. Its not normal for me. I woke up this morning with lots of lower back pain and my boobs have been super sensitive the past couple days. We have been ttc for a while. I'm really nervous about taking the test, don't want a negative result. Is it too soon to be thinking these would be symptoms??