Hi and welcome to HCM.
If you want to be sure this isnt serious bleeding then the best way to evaluate your bleeding is to do hemoglobin
levels. But also this is usual after such surgical procedures and you should be worried. Few weeks are necessary till your periods become balanced.
If you notice bleeding beyond time of periods, lower abdominal sharp pain
you should visit doctor.
If not, just be patient and everything will be fine. Wish you good health.