6dpo symptom?

Lee
So boobs started getting quite sore to touch since yesterday. Kinda feel bruised. Was really lightheaded last night. Felt exhausted all of today aswell. We used Preseed everytime we bd'd in my fertile week and I still have 8 days till af due. Boobs don't usually start hurting til a couple days before she comes and its a different sort of pain. What do u think?