I am able to understand ur problems. Seperation from a loved one is difficult. But if it is to the extent of depression and anxiety it needs treatment. Many of the symptoms which u have mentioned is seen in people with depression and anxiety. It is not ur fault, usually occurs due to chemical changes in the brain. Depression makes a person sensitive and irritable to things which they were able to tolerate before and lead to interpersonal problems. V would need to know few more details like ur sleep, hunger, energy levels, interest etc to give appropriate suggestions. Ur problems can easily be treated with counselling and if needed medications. Don't let ur problems affect ur personal or family life. If u r looking for some help online, I would be more than happy to consult u online. Best wishes for speedy recovery!!