11 weeks and 3 day.

Alhamdulillah the baby's heartbeat is good, mama, that's the most important thing! Since your doctor already checked and said it's likely a sensitive cervix, you're already on the right track with monitoring, but honestly spotting during pregnancy can be unpredictable, some of my mum friends had it for a few weeks, some for just a couple days, so it really varies per person. The best thing is to keep track of how much you're bleeding (like is it getting heavier or staying light?) and follow up with your doctor if it changes or gets worse, especially since you're still in the first trimester. Take it easy lah, avoid heavy lifting and strenuous activity, and don't hesitate to call your gynae if you're worried, better safe than sorry!