I've missed my period over a month now,im always sleepy slight headaches alil breast sore frequent urination but a negative hpt. whats wrong with me?

Need more testing: Although hpt are very accurate I would suggest you consult your local physician. A lab performed urine pregnancy test as well as a thyroid test may be indicated. There are endocrine disorders that can have varied and vague symptoms that may be causing your medical issues. Unfortunately blood and urine testing will be required to definitively determine the cause.