I'm lost and confused.

Tisha
I haven't had a natural period since I was 15 and I'm now going to be 22 this fall. At 16 I was diagnosed with PCOS after hormones (low dose progesterone) and BC made me very ill to where I was nearly hospitalized. 
I have had two periods so far this year. One in May (four days) and just recently in July (six days). I'm wondering if anyone else has had weird periods like this as well and how you deal with them.