We had a similar problem in our family that turned out to be hidden mold contamination behind a wall. The mold then started reproducing inside the HVAC system and ductwork. Between the two of us we had many symptoms: persistent sinusitis, rash, fatigue, burning eyes, headaches, shortness of breath, IBS, occasional sore throat, tremors, ear aches, and difficulty concentrating. There are many companies that offer mold inspection services. We chose Mold Aid because of their certifications and experience. From what we learned, not all mold types are harmful. I suggest you find a reputable company to test the visible mold and air and follow their recommendations. Hope this helps.