Hair strands coming off from root.

Hi 27f iam not keeping well since aug. 1)I am having hair loss since many months.Recently while I was combing my hair came off from the root (some bunch)as if the wig is removed.iam worried a lot is it due to cancer ?I also have other symptoms since Aug Symptoms-Feeling feverish,chills,fatigue,temp ranging 98.6 to 99.3 Chest and exact back of chest pain too much in the morning and when I stretch and compress the upper body Tests-cbp,crp,lft,lipid,thyroid, serum creatinine serum uric acid,vit b12,calcium,sodium potassium,eeg all are normal Vit d3 15 Esr 28 Used many medications Taking vit d3 supplement 2)Also recently I attended a wedding when I went on stage for taking pictures and I stood steady iam having some shivering and weird feeling giddy ness feeling this happened three days in the marriage What may be the reason for all these cancer or anything else or nothing ???