Bleeding

Has anyone ever had bleeding in a pregnancy that’s intermittent?

I get one good wipe of red blood, then it slowly stops over a number of hours, then it happens again

I’m concerned as to what it could be, I’m only 5 weeks 2 days but I’m having an ultrasound tomorrow to hopefully get some answers

The bleeding started yesterday and has been weirdly on and off like that for almost 2 days now

Anyone been through anything similar?