It really depends what rate you're looking at. It can be lower than normal when looking at the whole population that is vaccinated but high on a specific group

It really depends what rate you're looking at. It can be lower than normal when looking at the whole population that is vaccinated but high on a specific group of this population. In this case, the fact that there might be complications specific to an specific age group and potential specific to women might be a hint that there's indeed a problem that was not seen. It does not mean that the vaccine is not safe, but it might be not safe in specific circumstances, like a lot of medications already are.