I’m 8+2 days and I’m getting a fair amount of cramping today

Even on and off in my back and also when I sit down it almost feels as if I’ve got pressure in my vagina/lower belly.. once I’m sat down it feels fine it’s just the initial sitting down. I’ve run to the toliet a fair amount of times today thinking I’m bleeding. It feels a bit different to the cramps I got at 3-6 weeks pregnant? I’m worrying and not sure if it’s normal I never remember cramping in my back with my daughter. I’ve not had anymore spotting since around 6 weeks.
Re: How much cramping is normal?