Could these be signs of pregnancy?

Hanna
My AF is due on the 17th according to glow but I usually have it around the 19th. I have been having mild irritating cramping for like 2 days and just now when I went to the bathroom my CM had a pinkish tint. I've been nauseas but I don't know if that's because I havnt been eating very much because everything sounds horrible and makes me nauseas. Any advice?