I just woke up and felt like I was having trouble catching a good breathe and when I try I get a gag feeling, so I try to take a bath to see if maybe that’ll help and I kept trying to get a good breath and I kept gagging until I threw up yellow stuff.. I only ate 1 slice of pizza the day before so I know it’s not from that. Plz any suggestions or advice on what’s going on? Also I have had 0 appetite lately. And haven’t really been eating much mostly drinking water