 [ Symptoms ] could i be pregnant  i have irregular periods my last menstrual cycle started on 112 we have had unprotected sex every other day since 117 my nest menstrual cycle is not set to begin for at least 10 15 days yesterday i noticed my breasts were very tender and more full i have to eat every couple of hours or i am very nauseous my abdomen hurts when i lie certain ways at night is it too early for me to have pregnancy symptoms [ Disease ] the following risk factors increase your chance of getting fractures from osteoporosis past broken bones from osteoporosis very low bone mineral density bmd frequent falls limited movement such as using a wheelchair medical conditions likely to cause bone loss such as some kinds of arthritis taking steroid medicines called glucocorticoids such as prednisone other medicines that may cause bone loss for example seizure medicines such as phenytoin blood thinners such as heparin and high doses of vitamin a