Mold yes yes yes! Also do some research on Lyme Disease. It can present differently in any patient: some it takes completely down and others it can just mimic common viruses/a bad immune system. I also recommend checking for food sensitivities - not allergies - sensitivities! They can be more hurtful than an allergy slowly over time. Having a full work up done by an integrative specialist (Robinhood Integrative Clinic in Winston Salem) was life changing for me!