Burning nipples from progesterone?

Diana

Hi all! So I’m 8 days past <a href="https://glowing.com/glow-fertility-program">IUI</a> and my nipples are really itchy and have a burning feeling. My breasts have been super swollen for days but the nipple thing is new. Anybody know if this could be a pregnancy symptom or just a side effect from the progesterone I’m taking?