Has anyone had a successful transfer when taking antihistamines before and after transplantation? I have had 2 failed fresh embryo transfers and doing am doing a FET in a few weeks. Each transfer I stopped taking the AH, I am now wondering if the inflammation from the hives stops implantation or could my body be rejecting the embryo because it sees it as foreign. I am also wondering if taking steroids would help transplantation by keeping down inflammation. Any insight would be greatly appreciated, thanks for reading.