It's been a while since we've had one of these.

I came off my bike yesterday and I was okay apart from being a bit bruised and shaken. Today I've woken up really achey and unable to move my neck much. (Idk why my neck/shoulders hurt so much as the weight of my bike went on to my legs and my body weight went on to my elbows) I can't get an appointment with my GP today so I was thinking about going to the walk in centre at the hospital. Should I go and get checked up or should I just stay at home and treat it myself? Do I put heat or ice on it?