They are a bit messy Kate I'm afraid, although it wasn't me that dubbed them messaries

Apt name though!!
I just found they gave a messy discharge, and I found that sex was sore when I was on them - they made things a bit dry too from memory. But then, I'd just done IVF and had needles and all sorts of equipment up there a few times so it could have just been from that!
I tend to over-react to anything and everything, but I didn't have any problems with them as far as nausea, headaches or any of those sorts of side effects (I don't even know if they ARE known side effects!), so you'll be absolutely fine ... just glad to stop them when they say you can!
Just remember - as bleh as it is, it's helping baby settle in gooood, so worth every messy moment!!