Any advice will be appreciated

I’ve had some bleeding two days ago it stopped after 5mins and EPU said if I ever get it again to phone right away. All day I’ve had some period like cramps after taking paracetamol it’s still the same pain, I’ve went to the bathroom and had a little bleed again but feels like it could be more and I’m scared to keep checking. EPU said to phone if I’m filling up pads but I’m not too sure how much is needed to phone back. I explained to them I’ve an early scan in 3days time but they said they couldn’t early scan tonight anyway. I am trying not to stress but it’s difficult not to I’d rather just be seen and told I’m fine. I’m 7+5 days.