Changing order of images inserted into a post

I am just working on my first couple of posts and when I insert images from media library into the post they appear in an undesirable order – is there a way to control the order or change it around? Or is it something to do with the order I uploaded them in from my computer into the media library?

My website is very image centric and so every post will have 6-15 images. Therefore I want to be able to bulk upload to media library to save time without having to be precious about the order but have come across this problem if anyone can help?