Heart attacks can happen even in young people, as can congenital defects in heart valves. Since you are having no chest pain today, you might just make an appointment the soonest available with your doctor, not just to check your heart but about the fluid feeling in your ears & tenderness in your neck! Hopefully the will order a CBC with differential to assess the white blood cell components' numbers!
Usually, unless perhaps it is a very slow acting antibiotic like Cipro, you should notice an improvement with antibiotic in infection before this time. The doctors tell you never put q-tips in your ears. You might try using a warm damp washcloth and leaning your ear on it- something I think I remember from nursing school, where osmosis works to wick the fluid out of the high concentration in your ear canal to the lower concentration of the warm washcloth. I've been suggesting that to an immediate relative lately who has been feeling like fluid is in her ear. She uses hydrogen peroxide in her ears (don't try that with a doctor's okay)!
See PM about a number of reasons for low BP. You might also look on medhelp's dysautonomia forum, where a number of community members suffer from low blood pressure to dysfunction of their autonomic nervous system.
I should mention that I'm 26 years old and have been in good health. What could be other causes of low blood pressure other than me heart? Could the bp issue also be something to do with my ears/throat?I've been having some chest and back achiness but not today. I can't still feel fluid in my ears and a little tenderness in my neck. You can't even get a Q-tip in my right ear. Wouldn't you think some of this would've resolved after 5 days on antibiotics?
Best to go in and get some heart testing, like an echocardiogram, since your pressure's low and though you have acid reflux, in women, a heart attack can sometimes feel like a case of heartburn. So, please don't delay!