Taking care of covid 19 patient.

I am taking care of my husband who was diagnosed covid positive on 28th april and he is under home isolation due to mild symptoms. We stay in 1bhk house so he lives in room and i in hall but there ia no door to his room its open . I wear 3 layer mask and use sanitizer whole the time and we share same bathroom but i sanitize it whenver i want to go . I was diagnosed negative on 28th april . But from yesterday i went to mrkt and when coming back i drank chilled water in sweats but from that time i am feeling unwell i have tiredness and low grade fever and little cough with phlegm. Please suggest what should i do, is it normal cold and flu or something else... plus my husband feels unwell in this much hot weather so he sometimes use air conditioner on 29 temprature . Please suggest can a covid positive patient can use air conditioner? Thankyou in advance .