First of all, Congratulations on your baby!
Different vascular skin changes are associated with pregnancy including pyogenic granuloma (granuloma gravidarum), hemangiomas, hemangioendoteliomas, glomangiomas, spider angioma, unilateral nevoid telangiectasia, just to mention a few.
For example, pyogenic granuloma is a rapidly growing, friable, red lesion above skin surface that can reach even 1 cm in diameter, and fingers are one of the most common locations. It is a benign tumor, but tends to bleed (especially with minor trauma) and it may persist indefinitely if not removed. The importance of pyogenic granuloma is that it can be mistaken for amelanotic nodular melanoma.
If you are uncertain about current diagnosis, it is absolutely appropriate to ask your doctor for further diagnostics to be performed in order to confirm or correct that clinical diagnosis.
Yours in optimal health,
Dr. Jasmina Jankicevic