Hello, and I hope I can help you today.
There are many kinds of 
moles and spots that can appear during 
pregnancy on all areas of the body. The vagina and 
vulva are frequent sites of these lesions because of 
hormonal changes.
If the small spots that you see on the inside of your labia are bluish in color or red, these are called hemangiomas. They are small growths of the blood vessels under your skin; if they are growth of capillaries, they will be bright red (called cherry spots) and if they are venous the spots will appear blue dark purple or black. They're filled with a small amount of blood to if you pop them they will bleed.  The one you already popped may be a little infected, so try to leave it alone and keep the area clean so it may heal.
So in the meantime, try not to touch or traumatize them, and as the baby gets larger more may appear. They are simply cosmetic and will cause you no harm or harm to the baby. These types of lesions go away completely once the baby is born and your hormone levels return to normal.
I hope that 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