I am 18 years old and healthy, I have never missed a period apart from when I fell pregnant at 16, my little girl just turned one this month. I have missed my period, I took a pregnancy test at 4 days late and haven’t took another since the test was negative, I figured that by that point a pregnancy would be detectable.

What else can cause me to miss my period? Is it something worth seeing my doctor about?

Any advice is appreciated :)