19 years old.. Haven't had a period in four months.. Have regularly had unprotected sex, but 5 home pregnancy tests show up negative.. I have a larger belly that's relatively hard and even when I suck in.. My breasts have also greatly increased in size recently..? I don't have health insurance at the moment because I'm doing an internship out of the country..
Could I be pregnant?
(also I've been eating really wierdly, like a lot of food for a couple days and then no appetite for like a week)

Are your periods usually regular? Pregnancy is possible, especially with unprotected sex. Are you trying to become pregnant? Sometimes the urine tests just don't pick a pregnancy up, although it would be very unusual if you were roughly four months along.

If you are normally regular, it would be wise to see a doctor about not having had a period for several months whether pregnancy was the issue or not.

Are you able to save the money needed to see a doctor? Anyone you could borrow from? What about any sort of pregnancy center where you are located? They often will provide free or low cost testing and exams.