5'7 125 pounds got 480cc saline breast implants 2 weeks ago. How soon can I go back to have the surgery re-done?

Sorry to hear that you are disappointed.  It takes several months for you final appearance to be reached.  Patients frequently feel that they look smaller than they anticipated early on.  I would encourage continued patience and waiting at least a few months until making a final decision on revisionary surgery. Best wishes.

I'm sorry to hear about the concerns you have after your procedure.
You should be aware that a significant percentage of patients at your stage of recovery will feel that they are too big or (more commonly) too small.I routinely ask my patients to wait at least 3-6 months before evaluating the end results of the breast augmentation surgery. This waiting time allows patients to (usually) physically and psychologically adapt to the new body image.
From the physiological standpoint, it takes many months ( and even up to one year) to see the final results of surgery. factors such as swelling, tissue contraction, skin redraping, implant shifting etc. come into play.
From the psychological standpoint, patients undergo an “adaptation period" during which time they get used to the changes that the surgical procedure has brought about. Severe emotional swings can also occur after any type of surgical procedure.
Obviously, it is best for patients not to be making important decisions ( for example about the results of surgery and/or the need for additional surgery) while they are experiencing these emotional “ups and downs”.
In your case, I would suggest continued patience. Continue to follow-up with your plastic surgeon.  If in the longer term, you remain displeased with the outcome of surgery,  I would suggest that you have a calm and constructive discussion regarding your desired goals with your plastic surgeon. This communication will be critical in determining breast implant size/type/profile will most likely help achieve your goals.
In my practice, the use of photographs of “goal” pictures (and breasts that are too big or too small) is very helpful. I have found that the use of words such as “natural” or "DD cup” etc means different things to different people and therefore prove unhelpful.
Also, as you know, cup size varies depending on who makes the bra; therefore, discussing desired cup size may also be inaccurate.
3. Once you feel you have communicated your goals clearly, allow your plastic surgeon to use his/her years of experience/judgment to choose the breast implant size/profile that will best meet your goals. Again, in my practice, this decision is usually made during surgery ( after the use of temporary intraoperative sizers). Viewing the patient's chest wall in the upright and supine positions, with temporary sizes in place, help select the best breast implant size/profile for the specific patient.
I hope this, and the attached link (dedicated to revisionary breast augmentation surgery concerns), helps. Best wishes.