I dropped my laptop a while back but now it appears to not be charging?

It has been quite fiddly but normal just worked however I moved it recently and now it won't charge at all, I've moved it here and there but nothing.

It is a Lenovo b51-80
Anything appreciated.

Check and see if the charge plug it loose in the port, if so it will need to be changed, this isn't normally a DIY job. See if wiggling the cable near the charge plug and near the strain relief exiting the charger. If their is a partial break some electrical tape can make good the break.
Otherwise take it to a tech.