Stubborn Cher continues to try to turn back time with plastic surgery in a bid to to impress beau Alexandra “AE” Edwards, RadarOnline.com has learned. Sources claim the 77-year-old singer is paying a steep price by living with relentless pain due to her constant nips and tucks! “She’s had so many nips and tucks,” an insider dished to the National Enquirer. “After the procedures, she’s wrapped in bandages and in pain. Her face throbs for days, sometimes weeks, at a time.” According to the shocking report, Cher won’t stop going under the knife despite growing concerns from her inner circle. “Pal…