I've been through six egg retrievals. I've probably been lucky in the the physical effects weren't bad for me (but I've had/have endometriosis so I'm pretty used to just dealing with pain and discomfort). The emotional effects were harder. Not just the stress of not knowing whether it was even going to work (most times it didn't), but also the hormonal shifts resulting in rapid mood swings and irritability - which my partner found hard to deal with.