I've had ear problems my whole life. My ear canals are tiny and when younger, I always had infections, etc. I was hospitalized years ago with the same problem you are having now. Every time my heart beat I could hear it & my head throbbed every time. It was a combination of Sinus infection, migraine, & stress. (so the docs said)
Since you say you are recovering from the previous month, it could be an infection still hanging on that never cleared up. I would see an ENT soon as the others said. There are different things that will help with the ringing, hearing your heart beat, & other problems. Hopefully he can get it cleared up for you. Just don't put it off, thinking it will get better because it may get worse!
I hope you find relief soon, I can imagine how miserable you must feel. Good luck & warm hugs!
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Fibromyalgia*Osteoarthritis*Sleep Apnea*RLS*Menopause Allergy/Sinus*Spurs on Spine