Is it normal to ovulate 11days after your period starts?

No: That is a little early to ovulate. A positive ovulation kit means you will ovulate 1-2 days later. But still it is a little early. As women get older, and their ovaries get closer to menopause, that can happen more. It you have ovulation surges even earlier that would be a cause for concern...Or if you an infertility.

Short Cycles: Yes. Of course this can be possible.