Firstly you should know that you have to wait 24hrs for the totals to catch up. If you got the clicks say 30minutes ago then the money paid will not be accurate.
You should use valuable keywords in your content you can use website like keywordspy.com to discover high paying keywords!
hmmm that is very low.... Sometimes these things happen. Hopefully it will pick up for you soon. I think we've all had these days sometime or other.
adsense is a numbers game some times you get low cpc and some times you get hpc for same keyword so you don't this about this its natural