side effects vary drastically from one person to another - and even one cycle to another

the BCP is defininately different for each person - i have had horrific issues (GP thought i was having a stroke) so will never go there - for a lot of people, it's nothing to worry about

lucrin/synarel - headaches are common. it's also effectively putting you into a medically induced menopausal state - so think of what people go through with menopause (hot flushes etc) and you're there. not everyone gets this, and again it varies. i found i got very crampy - like AF was on her way - but she never showed

puregon/gonal-f - this one varies greatly. i found i was bloated and felt a bit nauseous, but nothing unmanagable. it was worse during IVF stim cycle than it was during IUI as they stim you to get more eggs. i also found during ivf stim i was fairly uncomfy (BD was out of the question after a while) as my ovaries were significantly swollen. this can be much worse for some, especially if they develop OHSS

pregnyl/ovidrel - think early pg symptoms!! these contain HCG, so you are likely to have some early pg symptoms (morning sickness at ovulation - FUN!). also a lot of people have a reaction at injection point from this one. red welts etc. this one is also that one that, if you're going to develop ohss, can tip you over the edge. it triggers ovulation, and can be the shot to start the fluid leakage into your abdominal cavity

progesterone/crinone - apart from the ick factor, they are similar to what you'd feel in early pg - depending on the person, you can have some consitipation (or the other extreme!), bloating, discomfort. will also delay the arrival of AF whether you are pg or not

add to all this the hormonal mood swings, and it's not much fun at all!