U may be having oligomenorrhea(scanty menses)
Any other symptoms u have along with this?? Like wt gain,acne,blackening around the neck??
U need further evaluation for the cause of the same
Next Steps
test to be done:
thyroid profile ,sr
prolactin(early morning fasting )
LH,
FSH(on Day 2 of periods)
usg pelvis to see if any ovarian or uterine abnormalities leading to the same
Health Tips
wt reduction,regular exercise, plenty of fluids ,reduction in junk foods may help