Blue/purple lips

Jessica • 34 Pregnant w/ #2
Ok ladies - I have been told twice now (two completely different occasions) within the last week that my lips look blue or purple.  I tried googling it and it could be oxygen or anemia related but Google is not always the best source so anyone else have this or know what to do? Should I call the dr?  It's late so if liky have to go the birthing center of I went tonight :/