Stomach problems

I have been having some issues with my bowel movements which seem to be getting worse. Whenever there is someone in the house or close by the toilet/bathroom I have trouble actually going my stool is always small/hard and difficult to pass and I feel constipated. However whenever I'm alone or I know nobody can hear me on the toilet I consistently have loose stools/diarrhoea I get sudden urges to use the bathroom and need to go straight away. It seems to be an issue particularly in a morning but I can have multiple bouts of diarrhoea throughout the day it never seems to matter what I've eaten either. Just wondered if this sounds like a nervous stomach or ibs ? Feel too embarrassed to go to the doctors , any advice or has anyone suffered similar symptoms?