Could it be???

I haven’t been feeling right lately. Been very moody dull cramps my nipples are sore nauseous and very fatigue. I’m suppose to start my period today but my boobs are still sore and usual on the day I’m suppose to start they stop hurting that’s how I would knw I’m going to start but they still hurt it hurts to wear a bra which is unusual for me. Yesterday I started very light pink spotting since 7:30 last night it’s been on and off. Out of this month I’ve only had sex on the 1st 6th and 8th could i have ovulated late and this is implantation bleeding or just my af. I dnt ever spot before a period I either start on the day of or a day late. The very light pink spotting ain’t even enough to fill up a panty liner.