You need consult with a Psychiatrist at the earliest. Your sleep disturbance, crying episodes, palpitations and other symptoms you might be going through are very much amenable to treatment. Consult asap.

Dear friend, Stress and anxiety if left untreated causes lots of problem at work and social life leading to depression , which again decreases our capacity to fight against stress and anxiety and we get trapped in a cycle. U need to get vocal about it. Share ur feelings with your close friend and also see any psychiatrist nearby , he will help you to understand your problem better and in a month of proper medications and therapy you will find things getting better. All the best.