Because I'm in a brutally honest mood, I can tell from the way you posted your question that you have nothing to worry about as far as competitions or publication.
As far as being considered 'published', yes if you intend to see payment from a different site. For example, you cannot post 'finished' material here and seek to place it elsewhere to attain money. Incomplete material, still in need of editing or polishing, can be posted here without fear. The caveat is you're not considered 'published' to agents or editors just because you posted your material on sites like this one. So, you cannot use postings here as credentials. That criteria requires you get paid for your efforts.
On that note, please be aware you're on an award-winning writers' site. The only way your future peers can judge your merit is from what and how you post.
Just so you know.