Hellppppppp!!! I'm sick!!!

Hi so yesterday I started my birth control pills (first time ever) I took one at 10 last night and then at like 2 in the morning I woke up and starting throwing up like stomach fluid and mucus ( I also have a cold). So I'm worried about like maybe it's the pill or if it's the mucus from my cold that built up and now I'm releasing it (this happens whenever I've had a cold for a long time). I'm way worried I'm 18 and I went to the doctor privately and secretly I because my parents would be pissed if they knew and now they're worried about me being sick so idk what to do!! Is this normal???