I had coffee & a whole plate of pasta before i got on the treadmill and when i got off my ears were ringing and i was dizzy and i still am an hr later?

Too non-specific: Wide range of possibilities, most of them benign in a 20 year old. How long have you been on the meds? Do you know how they affect your autonomic systems? If symptoms persistent or worrisome see someone.

Need more info: were you well hydrated with water not coffee. Also coffee ( caffeine) and alvaert D (Sudafed) plus some possible dehydration could lead to symptoms. If reoccurs see your doctor.