Cramping before missed period with BFP

Ok y’all I’m 9 DPO and just got my BFP yesterday. I’m also 2 days before my missed period and I’m having some mild cramping. I’m getting a little anxious. It’s not in my pelvic area where I usually cramp it’s like right at/below my belly button. Has anyone else experienced this? I don’t want think negatively but it’s flooding my mind.