I took robitusin dm and i forgot i just took dayquil pills and im getting anxiety because i dont know if its really bad?

Just be cautious: there are several combo formulations for Robitussin and DayQuil, so even if you doubled up and took same ingredients in each, that won't harm you, just skip the next dose of either and stick to only one drug, you may feel bit sleepy, so don't drive if you do, good that you asked, always exercise caution with multiple medications, best wishes