3 losses, hospital appointment, pregnant?

Victoria
Hi ladies hope its ok that o I post in here, sadly we have had 3 miscarriages in the last 9 months but have a hospital appointment in 10 days to investigate, me and my partner haven't been using protection so what would happen if I fell pregnant? My period is due 3 days after appointment so if I was pregnant appointment day could be the day I would normally test! Will they still investigate? 
Thank you xx