I am curious about breast reduction surgery. Are there any side effects?

Thank you for the questions.
Based on your description and pictures I think you may be an excellent candidate for breast reduction surgery; it tends to be one of the most patient pleasing operations we  perform.
By removing “excess” breast tissue, adipose tissue, and breast skin  this operation reduces and lifts the breasts to a higher position on the chest wall. By doing so, patients often find improvement in neck, back, and shoulder discomfort and find it easier to form their activities of daily living and exercise.
Some of the risks/potential complications associated with breast reduction surgery include:  infection, bleeding, seroma, hematoma, wound healing problems, abnormal scarring ( hypertrophic or keloid),  loss of sensation, inability to breast-feed, breast asymmetry, necrosis of tissue or skin,  unsatisfactory cosmetic results, unpredictability of exact cup size postoperatively,  recurrence of the breast hypertrophy, and the potential for further surgery.  Other (possible, but rare) risks related to surgery in general include deep venous thrombosis (clots),  pulmonary embolism, pneumonia  and even death.
Fortunately, the majority of patients who undergo this procedure by well experienced board-certified plastic surgeons and board certified anesthesiologists do very well and complications tend  to be relatively minor and treatable. The severe complications are rare. I hope this, and the attached link, helps.

Thank you for your question. What you describe is a common set of issues for women with large breasts. First, I'd like to address the difference between a breast reduction and liposuction. Liposuction is used for contouring areas of the body by removing some of the fat in a specific location. This is sometimes done in the breasts but not very often. This is done using small incisions and a thin suction device. A breast reduction is a removal of extra skin and breast tissue, using the remaining tissue to recreate shape of the breast. As with any surgery, there are risks associated with breast reduction. There is a low possibility of infection, scaring, diminished nipple sensation, bleeding, or cosmetic dissatisfaction. Complications are infrequent and in most of my patients' opinions the benefits of this procedure far outweigh those risks. I am a Board Certified Plastic Surgeon located in Seattle and I would be happy to have a chance to meet with you.

HI solii.  A qualified plastic surgeon can perform a breast reduction on a suitable patient with a very low risk of complications.  In the right patient, the benefits far outweigh the risks.  The risk of lost nipple sensation is low, but depends on the technique used by the surgeon.  I suggest you see a plastic surgeon to discuss your concerns. and learn more about the surgery.