I need some help everyone... I'm 21 and I just trying to find some answers to the symptoms I have been having..... Feeling sick to my stomach, headaches, heartburn, lower pains in my back and uterus area.. just all out exhausted, mood swings coming out of no where, swelling breast but they do not hurt. The list goes on and on, but the thing is that I have been diagnosed with PCOS since I was 15 years old. Up until the last 8 months my periods where always irregular. Over the past four years I have lost a hundred pounds which has made them more regular...... Soooo now I'm five days late having all these symptoms and I freaking out.... I have taken three htps but all came back negative.  I have read that it would be better for me to go take a blood test is that true? Well what if that comes back negative too and I'm still having these symptoms? I just know something is different any advise would help thanks everyone..