Many of your symptoms seem related to Stress
.Also nothing significant has been found on your investigations.
Get a consultation with a Neurologist
who will be able to take care of your Vertigo
,Headache(heaviness of head) and also your other multiple symptoms.He/She will also be able to rule out any other serious causes for vertigo & headache.
Also practise methods like meditation
or yoga or walking to de-stress as you juggle work and home . With proper treatment a significant improvement in symptoms is possible.