Normally a few days after ovulation my breasts become fuller and quite tender, and this lasts until I get my period. I had my first IUI on Monday this week, and ovulated that same day. I have none of the breast symptoms and am a bit confused as to why not. I'm not using any pessaries. Is it normally the progesterone levels that give you the breast symptoms? And does this mean that I may not have enough? I was not particularly worried about not having pessaries, because my hormone levels have always been fine. But now I am thinking...Can clomid/menpour have an effect on progesterone levels? ie lower them?