Help am i pregent?

Been off pill 2 months can't remember what my period cycle was before on pill. First month withdraw bleed n 28 days later started period for 4 days. So assume I'm 28 cycle but not sure it's 30 days 2day n I had light pink spotting for 2 hours n stop cud this be implation bleed n I just got a longer cycle as I dnt remember what my cycle was like before as been on it for 12 years