Yes, you should be worried if you don't know what's going on.

Can I get child support if ex has investment properties?

When did he acquire the property? Use the find a lawyer tab above.

After divorce, will my wife be entitled to part of my european pension? I am a Luxembourg (EU) citizen with US green card.

If it was acquired during the marriage, yes.

Child support and myself are unable to locate the father of my kids.

Process servers and private investigators are generally able to do this.

I was legally separated in California in 2009 after a year of marriage is my marriage dissolved?

You're still married unless you have a signed Judgment of Divorce.

Will being pregnant by another man affect my current divorce in California?

Without question. You need to discuss this with your attorney ASAP - and if you don't have one - get one in the town in which your case was filed.

Family law

Seek an order from the court finding her in contempt and hire professionals to find her.

Is it possible to locate marriage/divorce records if I am unsure where they took place? This is in regards to someone I'm dating

If you know his name and date of birth that should be sufficient. But it's unlikely that someone will do the work for free.

Can you divorce in a state other than the one you married in? Can you divorce someone who is in another country?

Yes, if you meet the residency requirement in the new state.

What will happen in court? Will they issue any support for kids?

Get a local lawyer and file the appropriate petitions - without that paperwork it's unlikely any support order will be issued.