You could have a case if a) you had copyrighted your song last June and b) your track had a strong topline melody and Akon’s topline melody was identical to yours. I hear a somewhat similar chord progression that it’s pretty common in this music style but, as boininkeee2000 said, this isn’t enough to make your case.
Several well known and unknown artists have sued Coldplay for stealing their melody lines from them but non of these artists won their case (even if some of the toplines were pretty close to the Coldplay ones). So,it’s really hard to imagine you can claim copyright infringement in this case.
Not a legal advice though, just my $0.02