Top work on running 5k, lady! Definitely give parkruns a go, they're nice and low key, people are generally friendly and often there are people running with dogs!!
I have two pieces of advice: firstly, try to do 3 different runs each week - a short fast one, a medium one and a long slow one. It's less boring that way too! Up to you what those distances and speeds are. Secondly, learn where all the public toilets or friendly pubs are. Just sayin'.