My eldest daughter was conceived by GIFT (gamete intrafallopian transfer) way before I even knew HMS existed and my symptoms were relatively few.
I was very fortunate that it took first time as the mood swings were horrendous, it was very uncomfortable waiting for the eggs to mature and what I now know to have been IBS was aggravated. I also reacted rather badly to the anaesthetic.
The surprising bit was that despite having PCOS, slight endometriosis and virtually no periods at all for the next four years, my second daughter was conceived naturally
The pregnancies themselves were pretty normal other than a really bad back.
Another good thing though, the deliveries were both fantastically quick!
I have two beautiful girls 17 and 21 but unfortunately they both now suffer with HMS which I can only blame myself for.
Good luck x