Abdomen pain. Side effect of duphaston?

Hi, I have been diagnosed with PCOS. Had taken duphaston 20 days back, I have to again start duphaston from 21st day for 5 days. I have stomach ache since 5 to 6 days. I get headache too in the mornings and lower back pain. I am trying for a baby What may be the reason for these issues. Kindly answer This was my question yesterday and it has been answered as below Hello.....The most frequently reported side effects when taking Duphaston tablets iis nausea, bloating, breast pain, irregular bleeding, dizziness, weight gain, skin rash and itch. Duphaston increases level of estrogen , estrogen could cause head ache... See if all symptoms subsides ,if not you have stop medicines and consult gynaecologist. I am not experiencing either of the effects as above except headache. I have abdomen pain but it's not severe and lower back pain too. Is it side effect of duphaston? Kindly answer