@Heyside - I always have this issue after having anaesthetics ( post EPU, post d and C, post Caesar ). I have been at risk of OHSS a few times buts it's the anaesthetic that does it for me. It just seems to take a while for my bowels to start working again. In the past I have had to resort to drinking the prep they give you to drink before having a colonoscopy! It sounds like things are starting to work for you now anyway.