ovarian cyst??

hi sorry this might be a bit long. so end of last year i skipped like two months then got a really bad period and i went to OBGYN and they made me take a blood test and they never got back to me with the results even when i called. i had a really late period but it’s like almost regular again? but now i have had this dull ache in my lower right side that’s not going away. i had it during my period and now it’s coming back coming on my ovulation. i’m away from home and i’m young so idk if i can find a doctor should i contact my school/ER for an ultrasound or should i be fine?