Duphaston side effects??

Hi, Im 38 yrs old and been trying ttc for the past 3 yrs.

I had my IUI done on june 17 and started to take duphaston on june 20 for 10 days (2x a day) as advised. Feeling lightheaded, tired, cravings, sleepy and sore breasts for the past 2 weeks. I am supposed to have my period last june 28 but no period yet as of today.

Scheduled to see my doctor on july 4.

Are these side effects of duphaston? Is the drug delaying my period? Still not getting BFP 😢. Any thoughts?