That sounds like depression/anxiety mixed with actual asthma or allergies. I've dealt with that for the last few years on and off. I have really bad seasonal allergies and when COVID hit I had really intense physical anxieties manifesting WHILE I was having very real allergy symptoms. I knew I wasn't sick but my body was legit going crazy and it was an annoying cycle to get a handle on. Therapy helped but it took time. Either way - Have the animals ever been a problem for you before? Could it be mold or something like that? Have you tried wearing a mask while you're in the house and seeing if that helps?