This phenomenon is happening to a TON of people here including myself. Im having the 4 page showing problem on every site about 6 weeks after launch.
Starts fantastic and then suddenly does this.
However, this is only for a period of time, do NOT panic or rush into any kind of link building.
If you remain calm and prove you are not a spammer, after 6-12 months you will escape the sandbox with trust and suddenly start to rank overnight and it will keep growing.
Do not burn your probation by panicing and building links...
EDIT: Nevermind OP, seems you already burned yourself. damn.
Backlinks
38,62192% ********
Referring Domains
17,48198% ********