Mild flu symptoms 2 days. fever 100.8. occ cough fits., low mucus. aching under full left ribcage; a spasm feel if i push under ribs near stomach. energy ok. no medical ins. what could it be?

Viral infection: It is likely viral. Fluids, rest, tylenol (acetaminophen) should help the symptoms.

Sounds like a: Viral infection. You can just treat the symptoms if you don't get much worse. Mucinexdm will loosen and help with the cough. Dayquil and nyquil help too . Ibuprofen or aleve (naproxen) for fever or aches. A cool mist humidifier in the room will help too. Did you get a flu shot?