Quick question!

Started my full on period today so I'll start 50 mg Clomid Friday til Tuesday. I'm able to get pregnant without medication but I can't sustain a pregnancy bc were thinking my eggs are immature. I've had 2 healthy pregnancies 7 & 10 yrs ago. Reading stories about others not ovulating on 50 mg or Clomid just not working altogether has me worried. I have a 30 day cycle every month. So if I usually ovulate on my own I wonder the success rate I'll have? Any success stories similar to mine?? Ty