How many DPO did your boobs start hurting?

Nira • Wifey.Mommy.Happy
I'm only 10 dpo (tomorrow) and my boobs have been KILLING ME since about 4 dpo.
They have literally never hurt this bad, I can't sleep on them, my whole upper chest hurts. 
So my thoughts are...
1. I'm pregnant (which of course would be amazing)
Or
2.  Finally about to get AF for the first time since June (due to mc) and it's going to be totally awful and I'm just getting extreme PMS signs.
(Ps, I'm testing tomorrow, then if it's beg, I'll test Wednesday)