Throw up Red alcohol or blood?

So i drank last night. 2 mikes hard lemonade and one black cherry mikes hard lemonade. Cans. I dont deink often and i dont think thats particularily excessive. Im 130 lb 22 year old female.

Anyways, this morning i had a bitnof a hang over and was a bit nauseated. So i puked. And my puke was a bit pink with little peices of white in it. I'm a bit worried its blood. And that the little peices of white are little bits of stomach lining. Butbit may also be pink alcohol from the mikes hard lemonade mixing with the black cherry. I should also mention that im on concerta for adult adhd and it takes away my appitite so i havent eaten anything since the day before yesterday.

Im wondering how i can tellif its a bit of blood or not and at what point should i become worried?

I also took 2 red tylonol and 2 advil as well as my concerta, which is white....but the white bits look goopy....not hard.