Pakistan is safe, except a few extremist assholes and some confused idiots. Rest assured no one cares if you're shia or not.
Unfortunately, that's all it takes to destroy a nation.
BTW that is true everywhere, most people just want to live their lives and earn their living and care for their family. That is true of pakistanis, or iraqis, or any other country's people. Only a few people take up arms and form militias to murder other people. But a few people and a few militias can tear up the social fabric, it has happened in many places, and is still happening, as you see here. The number is not what matters, but how much influence they have. So you had better get rid of your extremist assholes soon.