My Daughter Recently Has Been Complaining Of Pain When She

my daughter recently has been complaining of pain when she bumps herself. Bruising easy and constant pain. she went to the doctor and has been for several visits. she has been put on vitamin d tablets and has had a heart monitor put on for 24 hours and bloods taken. Bloods have come back normal, not sure what they actually tested for, but we are no further ahead with what she has or may be suffering from. Normally a abit of a tough kid that never complained about hurting herself, she now seems depressed, constantly complaining about this pain and just not herself. She is 20 years of age and on a contra pill called genette which the doctor has also asked her to come off for a month. Any help would be much appreciated.