Hello, and I hope I can help you today.
Vaginal bleeding in the third trimester should always be investigated. If the baby is not moving like usual at the same time that is yet another reason to go to the hospital for evaluation. There are uncommon causes of vaginal bleeding in the third trimester, namely, bleeding from the placenta or separation of the placenta which can compromise the baby and possibly you, rapidly.
It is possible, and most likely, that you are just dilating further; however it is safest for you to go either to the hospital or to see your healthcare provider to get the baby monitored and evaluated and find out the reason for your bleeding. In addition, labor tends to be more rapid with a second child, and if you are significantly dilated it may be better to know that in advance so if you are discharge from hospital you know how quickly to return for symptoms of labor.
So in summary, I suggest that you call your healthcare provider and either go see your doctor for evaluation or go to your designated hospital for evaluation.
I hope I was able to adequately answer your question today, and that my advice was helpful.
Best wishes for the rest of the
pregnancy,
Dr. Brown