Could this be implantation bleeding?

I'm new to this and first time trying so I would love to hear anyones thoughts. Myself and my partner did the deed in the time frame I was ovulating. A day or two after I felt 'different' I was feeling sick, getting lightheaded,dizzy, some headaches and cramps. 6 dpo in the afternoon I noticed a pink spot. It only happend twice and that was it. I constantly have these cramps but they are bearable. I'm due my period in 5 days but eager to know if it was definitely implantation spotting I had?