As said above they will have had lots of people with the exact same problem, let alone general 'embarrassing' problems. It's not like you chose to have this issue, you can't help it and this is what the doctor is there for, and they won't be fazed at all, they'll treat it sensitively and hopefully be able to help you out!
Remember, it's always a good idea to talk to doctors about stuff like this. It's probably a small issue and they will be able to sort it quickly, but there is always a chance it could be a symptom of something which needs further treatment or investigation and the sooner you get it sorted the better.
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