One of the “selling” points for Vantage scores is the ability to produce a score quicker than FICO on a new file. Most lenders use FICO though.
Nothing to worry about. Use your credit responsibly and you have it made!
That is one of the advantages of the Vantage model not available in FICO - the ability to score new borrowers based on very recent accounts - those less than 6 months old. Nothing to worry about, it's just the way the model is built. Keep up the great work!! In another 4 months or so, you'll have a spanking new FICO to get excited about 
Hi, Zee!!
Credit Check Total offers a $1 trial for all 3 scores and reports. You can then cancel before the trial ends to prevent being charged for a monthly fee.
Discover Scorecard offers your Experian FICO for free - you do not have to be a Discover cardholder.
Some lenders also provide free FICOs to cardholders for the bureau of their choice; for example, Amex offers Experian FICO, Discover offers Transunion FICO.
As for your previous Q about Vantage - there is no advantage to them. It's assumed that model was created to rival FICO, but it would take quite a bit of time for a credit scoring model to gain enough traction to overcome FICO. As of now, approx 90% of lenders use FICO to make credit decisions - so it's best to make sure your FICOs are the best they can be. But in your case, Vantage is good enough to give you a ballpark idea of where you stand until your FICO becomes available. Just keep in mind, your FICO may be vastly different (higher or lower) than your Vantage score because they weigh scoring categories differently -- but, they may also end up being pretty close.
Also - Verizon, TMobile and At&T all use FICO scores -but they weigh other factors heavily for approvals - such as employment / income and past service usage, if any. So they are able to approve consumers even if they don't have sufficient credit history or low FICO scores - this is also why deposits are sometimes required to open an account with them.
So - you have never had any other accounts -- no loans either, right? If that's the case, then you probaby don't have a FICO yet. But you can check using Discover Scorecard to be sure - just enter your personal info and see if they can pull up a score for Experian. Totally free, you don't have to enter any payment info. And if they can't pull up a score for you, then you can try it again next month.
EDIT: I missed your other Q - FICO takes about 6 months of credit history to generate a score.
Oh, sorry! Well, only a few more months of waiting. Just keep doing what you're doing. At least you have the Vantage score to keep you excited in the meantime!