Hello Doctor! I went through IUI on 17th feb. took 4 injections of HCG 2000mIU/ml (on these dates:20/2,23/2,26/2,1/3), plus i am on duphaston and ecosprin. I had pain in breasts just one day after IUI but neglected as I am taking too much medication. But for last 3 days have too much swollen and paining breasts. Could these medicines also result in these symptoms?