Implantation bleeding

heather

Is it normal to have bad cramping all day with implantation bleeding plus my lower back has hurt all day as well my cycle day 25 was yesterday and i started spotting after I left work last night I always keep track of my weight on my periods and I usually gain a couple pounds on it but I’ve lost a pound that’s why I’m pretty sure it’s implantation bleeding just wondered if it’s normal to have cramping all day