Probably overreacting but...

So this may be so silly and i may be overreacting. Im 12 dpo today and got a spray tan done. My boobs really started hurting and i took prego test and its positive. I know, I should have tested before i went but i did not think i was prego because i had no symptoms till this afternoon. Please tell me everything will be fine. Spray tanning is not typically something i do. Im hoping it being just a one time thing itll be ok.