i have recently felt out of sorts with myself, like something's not right?? I have been losing a steady weight 5'4 @ 126lbs, i have lost 14lbs, my sleeping habits are all mess up, dizzy spells, have had some bowel problems, i experience this back that seems to related to my sternum somehow. which btw, i've noticed my sternum has like a real bony prominance and its getting worse.  it looks like a bony bowl sitting on my sternum and it will pop frequently thoughout the day.  But I noticed just tonight that the "hole" in my sternum is getting bigger.  And I have lost anymore weight, so it's not that.  Is my sternum involved with my back pain?  I have generalized muscle weakness, muscli twitiching, and I also have bruises that won't go away.  I have had them for about a month now and they are still there just like I got them yesterday.  And they still feel real sore, like i got them yesterday.  Oh yeah, and the weird pain that has been in my chest like up under my right lung cage, and towards the bad when I twista certain way to back up my vehicle, it hurts..????

Summarized question: What are weight loss, dizzy spells, and bruises that won't go away symptoms of?