What Causes Oversized Ovaries?

Hi, after marige my ovariers have becom bit oversized ,no cyst was observed in ultrasound.is this due to hormonal change after marriger?im 21.weight is 60 kgs. Nd my periods are regular.i feel pain in them but thats inheritedf frm mama.at age ov 14 i had ultrasound no abnormality in uterus or ovaries was seen.kindly ans