Hi,im 4 days late ,ive got stomach and back pain and sometimed have a headache,pregnant???

You very well could be I recently had the same problem and had almost all the symptoms but still got my period. You should take a pregnancy test. You could buy one at almost any drug store or go to the doctors and get a test if the home test is positive you're very more than likely pregnant and should go to the doctor to confirm it and get all the info you need about the baby on the way. If it's negative then your probably not pregnant but if you took the test to early then you can have a false positive ware you are pregnant but the test says your not. The best way to be safe is after it comes out negative take another one in a week or too. Don't do anything that could be harmful to the baby's health. If you are and dont want the baby then you can consider abortion or adoption and there is NOTHING wrong with either one! Hope I helped good luck!