Have you tried freelancing to get that much needed professional experience that companies seem to demand these days? There are various websites to find work such as freelancer and oDesk (google them).
To boost your portfolio (and more importantly learn new skills and progress) you could work on personal projects in your spare time. This also shows commitment to your field. And don’t forget design competitions! And keep a design blog. These are all prerequisites in a competitive field.
Maybe you’re already doing the above, in which case be patient!