Help!

Madison

I dont know where else to post this but i need help, im sick with something but i feel a weird pulsing in my head, behind my eyes. Its huge pulses that make me dizzy and blurs my vision for a second. It doesn't hurt at all. I've been nauseated and a little congested. I cant take decongestions because it messes with my heart (found that out last night) what is this? Should i go to the er?