Hmmm...this is a tricky one. I would point you to our visa information, like the guide to Barcelona
's visa section
, Guide to the EU Blue Card
, or the Spanish Guide
on Expat-Quotes, but I am not sure how you would approach it from being in the country illegally.
While many people report that they never have a series problem overstaying visas, the most common problem is the accompanying stress. Have you considered visiting an immigration lawyer? While of course it is an expense, it may be well worth the relief of rectifying your visa situation.
Anyone have any experience with this or advice?