Early ultrasound?

I've to ring up our EPU to request an early scan as I had a previous partial molar pregnancy and recurrent early miscarriage. I'll be 6wks on weds but know I ovulated later on day 18ish. I'm keen to get a scan asap. What is the likelihood of seeing something? Is a scan at the end of this week going to cause heightened worry or give me some reassurance?

Any thoughts? Xx