Does a mammogram increase breast size?

Nope. A mammogram is an x-ray study of the breast tissue, performed by squeezing the breast tissue between two plexiglass plates to thin and flatten the breast tissue so that a better x-ray can be taken. The "squeezing" is often pretty firm, and bruising or minor swelling may result, but these are temporary and hopefully infrequent.
No. Definitely not. While it is theoretically possible that the trauma of the exam could cause temporary swelling, it would be very transient in nature.

Related Questions

Is there a pain-free mammogram device? Which breast size is more likely to experience pain during a mammogram?

Density not Size. The discomfort (what we doctors prefer to call pain) associated with mammography is the result of compression applied to the breast in an effort to thin it out and obtain clearer images. Dense glandular breast resist the compression more than fatty breasts resulting in greater discomfort. Breast tend to become less dense and more fatty as women age. Read more...
No. The technologist should be able to work with you to titrate the amount of compression so that it is not intolerable. But there is no examination now that can substitute for a mammogram. Beware of phony claims that thermography is a useful examination -- it is not. Even MRI which is more sensitive than mammography will not always see the early cancers detected on mammograms. Read more...
Mammo pain. Compression is unfortunately necessary for mammography, and could be uncomfortable. It is not related to size. Some facilities use special disposable pads on the mammo unit to cushion the breasts in order to minimize discomfort. Some mammo units have compression paddles with rolled edges to minimize potential pinching. Call around to see if any facilities near you have these. Read more...

What to do if I'm wondering if the natural femme breast pills work and how much they will increase breast size?

Don't waste your $. Likely to ^ w puberty, pregnancy, breast feeding ; possibly prior to your period. You can build up chest muscles w exercise ; weight lifting but it will not ^ the amt. Of fatty tissue. There are no pills, herbs or machines that will ^ breast size. Breast augmentation is surgical enlargement. A padded bra will ^ appearance of volume. A supportive, well fitting bra can also enhance appearance. Read more...