Just had period side of abdomen and stomach feels a little tight could i be pregnant or is this in my head?

It is possible that you could be pregnant, as these symptoms can be early signs of pregnancy. However, it is also possible that these symptoms are related to something else, such as premenstrual syndrome (PMS) or gastrointestinal issues. If you are concerned that you may be pregnant, it is best to take a pregnancy test to confirm. Pregnancy tests are available at most drugstores and can provide accurate results within a few minutes. If the pregnancy test is positive, you should make an appointment with your doctor to discuss your pregnancy and receive prenatal care.