Fluid squishy sound back of head near left ear when i move my head in a certain way(sortof clenching jaw). also loud cracking sounds when i blow nose.

Fluid/Wax ??: Sounds like you may have a bit of fluid behind your ear drum. Most common cause this time of year is seasonal allergy. Try an antihistamine (Clariton and if Blood pressure not a problem Clariton D. Also a BRIEF course of Neosynephrine Nasal Spray...All OTC If not better see your Primary Care MD to have ears looked at. P.S sometimes a lot of cerumen (Ear "wax") may be the culprit.