having several differnt issue and not sure if they are connected.- recently(two weeks ago) i have a dime size lump on back of the neck on right side roughly located between shoulder and spine . feels numb at times, though i can feel it that it is not as it should be , with it i have been having headaches which are occurring more and more often. i have little to no desire to eat, yet i am gaining weight and i have body aches, worse being pain in back and chest .(note i had returned to gym and orginally thought it was due to fact i had not worked out for extented time prior but after resting for proper amount of days, i am still having pain in those areas mainly in the ribs/chest wall area. due to pain issue, not sleeping well and feeling worn out and even when i do sleep through the entire night, i wake up feeling like i never even laid down. have notice that since this started am having more feelings of depression and stress seems to be mounting. unsure if i should just suck it up or just go see a doctor, or is there something at home i could do to correct this.