Fever 101 below. Slight cold. Know why?

Dear Doctor, I have fever of 100F to 101F for the past 2 days. I don't know Why? I have slight cold. I am 41 years old unmarried. I take medicine for GERD problem PPI for the past 9 months. Endoscopy done in January 19 report is fine.👈 I have repeatitve Kidney stone formation for the past 2 months, USG abdomen scan done twice with in a month, it shows 3mm kidney stone, kidney block causing kidney to swell a little.Urologist gave Dynaperes 0.4mg, then Alfoo 10mg. I have Asthma taking medicine Montek AB Formoflo 250mg inhaler and Asthalin Rotohaler. I have uritcaria was taking Cetrizen 10mg and now Okacet 5 mg. I have insomnia taking Inzofresh tablet 10mg. For high heartbeat, Chest pain taking medicine Inderla 20 mg given by Cardiologist for the past 5 days.👈 My 2DEchocardiogram is mostly fine. Cardiologist advised Angiography, but I don't want to do it. I may go for Heart CT scan with dye. I fear dye must not cause urticaria! These are the health problems and medicine taken by me.