You have enough things ganging up on you that you probably need to see a therapist who can help you to get off the ruminations, worry, anxiety, etc. You might need, for a few days only, some sleep aids, but those SHOULD come via prescription and after consulting a competent authority such as a physician, ENT (ear, nose, and throat specialist, formally 'otolaryngologist'). I think you can bust this cluster up quite a bit, but it might be tackling it on several fronts at the same time. Be patient with your helpers, with their prescriptions, and with yourself. One of your best tools will be optimism, and the other will be accepting that there is some help out there.