Hi doctor, I underwent four iui's with donor sperm, but it's failed all the four times, I have regular periods, my cycle is 27days, good follicles, good ovaries, no thyroid, no sugar, I had taken hsg test where it shows I have good endometrium and no blocks in fallopian tubes, everything is good. But y it's failing. My age is 33years, I am healthy with no problems. Can u help me out please