Hello, and thank you for using Healthcare Magic!
I understand that you are concerned that you could be pregnant. I would recommend that you get a home pregnancy
test to find out for sure. Unfortunately, the symptoms that you describe are very non-specific. This means that they could be caused by a large number of different conditions (including pregnancy).
Of course, if you are pregnant, you should make an appointment immediately to see a doctor who can manage your pregnancy. However, if the pregnancy test is negative, you should still consider seeing a doctor. You are quite young and it is unlikely that the symptoms you describe are being caused by a serious illness. But if they persist or become worse, you should be examined by a physician to determine the cause.
Possible causes of your symptoms are anxiety
attacks, stomach virus, abnormal heart rhythms, and many others. To narrow the list down, a doctor would need to ask you a large number of questions and examine you in person.
I hope I have given you some useful information, and wish you the best of health.