How can the bulges under my boobs be fixed? (Photos)

The solution would be a breast lift and I recommend The Bellesoma Method. This will reshape your breast tissue creating upper pole fullness without implants, elevate them higher on the chest wall and more medial to increase your cleavage. Vertical scars are avoided, nipple sensation (in 95%) and the ability to breast feed are maintained.

Best Wishes,

Gary Horndeski, M.D.

Hello! Thank you for your question!
This is a tricky area. Many women have this. The best treatment is actually a reverse abdominoplasty, with incisions under the breasts to pull this tissue up into the breast crease. If you desire any breast work, like a lift and/or augmentation, this would be a perfect win-win.
I would recommend you see a board certified plastic surgeon for an assessment.
Best of luck to you!