Hi bonnie s in warrington PA,
If you have saline implants and are noticing more rippling and a decreasing size of the implants, then it is at least possible that you have a slow leak. Frank deflations usually behave a little differently - one implant appears a little smaller than the other, and then within a few days one is completely flat while the other is relatively unchanged.
But it's possible that you do have a small leak and you should see your plastic surgeon (or another) to assess how you're doing.
Another possibility is that you've lost some weight (or breast-fed, or a combination) and that with less volume of your own breast tissue over the implant, the irregularities of the implant have become more visible. If they're on top of the muscle the rippling may be visible over the entire breast; if they're under the muscle the rippling is typically most noticeable at the outer edge and lower (inferior) aspect of the implant.
If you have silicone gel implants then rippling is less likely to begin with (than with saline implants) but you should just as certainly contact your PS.
I hope that this helps, and good luck,
Dr. E