Thanks for your query.
Shifting countries does not lead to infertility
Your cycles are delayed, so you need to be investigated for that.
Causes could be stress, anxiety, recent weight gain or weight loss
, thyroid disorders, polycystic ovaries
If you have been trying for a year now, I suggest you consult a good Fertility specialist for a complete work up and evaluation.
Also, you need to continue taking prenatal vitamins
Also, sometimes, during ovulation, you might feel mild period like pain or have slight spotting, but these are not reliable, specially with irregular cycles.