I drank cranberry juice from a reusable straw and now im coughing up red, gooey stuff.?

Its not like a normal thing when ur nose gets clogged up or anything... Disgusting, i know. But i think it might be cause there's like mold or something in it? Ewww. But, ummm...... I umed it was clean since it was in the drawer with the other clean things, but then i remembered i had this cup that had a built in straw tjat got all moldy and icky.... Egghh. I wont go on but i just wanna know what might of happened?