M/c bleeding stopped for 11days then got bright red & brown blood was quite light but enough to wear a pad . can period come 1mnth after miscarriage?

Ovulation: Yes. Of course. Once there is no HCG the ovary ovulates and the menstrual cycle resumes.

It's possible: It's possible for you period to start back only a month after a miscarriage. It's also possible to have irregular bleeding for a while, even 2-3 months. It depends on how high the pregnancy hormone (HCG) was and how long it takes to clear out of your system.