Is my left breast bottoming out?

From your pictures I think everything looks fine.As the lower pole stretches it is common for some abdominal skin to be recruited onto the breast.this is why the scar can be seen there.hope this helpsdr schwartz

Your scars are a little asymmetrical, but I don't see any evidence of bottoming out from the photos you provided.  If you measure from the nipple to the inframammary fold on each side you will have a more objective measurement to go by.  It would be best to schedule a follow up visit with your PS, but everything looks fine from the photos that you included with this post. 

There can be a little asymmetry to where the scar line shows up on the breast mound between the left and right side.  What is more important is how the breasts look straight on.  If the distance from the nipple to the inframammary fold under the breast has not changed since your breasts finished settling out and all swelling resolved, then you aren't developing a problem.  Once again, it is common to notice some asymmetry between the breasts and minor ones are ok and do not indicate a problem.  You are probably reaching a time postoperatively that you are unlikely to see further change and your breasts would likely to seem stable from here unless people develop capsular contracture (and, over time, normal aging of the breast).  If you are noticing an asymmetry that is very problematic for you, please address it with your surgeon.  Best of luck to you!