Thanks for your query.
Your problem is not the arcuate uterus but the irregular and delayed cycles.
Arcuate uterus is an anatomical variant and causes no problems in conceiving.
It can sometimes lead to preterm labour, and abnormal presentation of the baby and miscarriages.
other than that, for conception, it is not an issue.
The problem seems to be your delayed menstrual cycle.
Anxiety, stress, hormonal imbalance, thyroid disorder
, adrenal hormone dysfunction, raised prolactin
level, emotional trauma, frequent travelling, rapid weight changes - all could lead to it.
, endometrial pathology - these are probable reasons which could impact your fertility
Please get back with your ultrasound
report and consult a gynecologist for detailed evaluation.