Can I lose my breast implant do to straining while taking bowel movement I've had them for one week no pain just curious?

Highly unlikely that this would ever occur. At one week from surgery it is likely that you do feel some movement of the implant if you include straining your chest muscles (pectorals) during this time and if the implants are below those muscles. You should be able to relax about this issue, but consider asking your doctor for some stool softeners so you do not have to strain so much with bowel movements. Also, some narcotic pain medications that are often given after surgery can be constipating, so look to get off of these soon as your comfort level increases as well as talking with your doctor.For more information, please go to my website at:WirthPlasticSurgery.com

It’s unlikely that straining during a bowel movement would cause your breast implants to become dislodged or lost, especially if you’ve only had them for a week and aren’t experiencing pain. However, it’s important to follow any post-operative care instructions given by your plastic surgeon to ensure proper healing and avoid complications. Sometimes the post-op medications can cause some constipation so if you feel you are having to strain with your bowel movements, you should contact your doctor for their advice. If you have any concerns or are experiencing any unusual symptoms, it’s always best to consult with your plastic surgeon for guidance.

It is unlikely if everything looks and feels ok.  You should ask one of your MDs if they can prescribe a stool softener so you don't have to strain.