Heavy bleeding for 2months after c-section is normal?

No. Although our definitions of "heavy bleeding" may differ, if you are concerned please see your obstetrician-gynecologist asap to address this. Normal lochia should not be very heavy nor last for two straight months! other problems such as cervical cancer, hematologic, endocrine (sheehan?) or structural (fibroids) pathology could explain your bleeding, so medical care is urgently needed.