I was suppost to have my period on March 9 and it has never come and I have taken 9 test which are all negative should I go get checked out

Did you mean that you expected it on April 9, or are you now two months without a period? If it's been two months, and you normally are regular, it would be wise to see your doctor to determine a cause. If you are late for just your April period, have you taken a test recently? If not, that would be something to consider. If negative, you could wait and see what happens for May. It may be that your cycle is just off and your period will either show up later or you will skip this month altogether.

If you are normally very regular, and have been trying to become pregnant, then you may want to see your doctor about having a blood test done. Always good to know as soon as you can if you are indeed pregnant.

If it was March 9, yes, time to see your doctor and get it checked out.

There are 100's of reasons for missed periods, depending on many health and age issues. Pregnancy is merely one of them.