Breast implants move to sides when lying down? I had 210 moderate profile, under the muscle done, 10 weeks ago (photo)

Hello and thank you for your question and photos. I am sorry to hear about your problem after your surgery. It appears that your implant pocket is to large and this allows for lateral displacement of your implants. The only way to correct this is with a capsulorraphy procedure. This technique uses sutures to tighten the implant pocket and prevent sliding of the implant laterally. I hope this helps you and best of luck.

Some degree of this is normal. I would suggest you seek out a second opinion from a board certified plastic surgeon in your area to evaluate if this is more than usual and what steps are needed to correct it. Usually a second procedure to modify the capsule is indicated.

When lying down, implants like breasts without implants will fall to the sides a bit. How much is too much needs to be evaluated in person.

I am sorry to hear about the problem you are experiencing. You demonstrate your concerns nicely. Although some “falling to these sides” of breast implants is quite normal when you lie down, if this occurs “excessively”, it may be a concern to patients.  This phenomenon is called lateral displacement of the breast implant;  it may be of concern from the visual and the discomfort standpoints. Surgical correction is an option: I do not know of any way that you can make it better yourself.
Generally, the lateral breast implant displacement can be corrected using an internal suture technique, decreasing the size of the pockets and moving the implants toward the midline.    In my practice, I use  a 2 layered suture technique (capsulorraphy) to close off the space laterally (towards the axilla). The use of acellular dermal matrix is an option ( although not usually necessary)  especially if significant implant rippling/palpability is present.
 
I hope this helps.