14dpo Implantation Bleeding?35 DAY CYCLE

So I just went to the bathroom and noticed a brown spot on my underwear. I wiped and checked and it was pink/red. Do you think this is the start of my period or IB? I've heard implantation bleeding can happen on 14dpo. The cramps I have are light and really do differ from my other cramps also i've never had cramping this light. Feeling nauseos and had a few headaches a few days back. Boobs arent sore but hoping the bleeding stops so I could test. I normally get my period 14dpo but today it just feels different... I also have a 35 day cycle...