I don't think you need to contact your dr. They say when you lose your mucus plug, you go into labor shortly after. So if you begin to feel contractions time them and if they get to 5-10min apart head to l&d. If labor doesn't start then mention it at your next appointment
Bring it up to your doctor but it doesnt mean youll start labor soon at all. You may not even go into labor for another couple weeks.
It's okay to lose your mucus plug... I lost mine with my first baby in the second trimester.. It came out over a period of time
Losing ur mucus plug is normal...and it can also grow back... so just let ur Dr know at ur next appointment....