you had your last booster a few days ago, so i'd be thinking that it could be a good sign - i haven't really had cramping either - it's more like a consistent pressure in my lower abdo (ok, i've had cramping that's made me toddle of to the loo, but the stuff related to the drugs is different!!) - i'd be thinking if it went, and then came back again - and isn't like your typical AF cramping it's a good sign

my SIL keeps telling me that the pressure type pain is a good thing - cos that's what she felt before her missed AF in all five of her pg's...