Pleasant feelings/Unpleasant feelings & craving/aversion

In dependent origination after sense-contact occured, craving is the next condition, which in turn forms attachment at its basis and so on... Suppose I am eating something or taking a massage to get rid of pains, is this pleasant vedana immediately connected with craving? Similarly with unpleasant feelings; Suppose I have a bike accident and I fall down the ground and my immediate reaction is: "Arghhh", and no other cursing; Is this considered aversion to unpleasant feelings? Furthermore, if I go to toilett to take a pee is this good feeling connected with craving? It seems to be quite difficult to discern whether one feels pleasant feelings (vedana) without craving, pleasant feelings with craving & the same with unpleasant feelings & aversion.