Are Headache, Numbness In Arm And Difficulty In Speaking Signs Of Stroke?

I have had symptoms of a stroke for a couple weeks. Headaches, numbness in my right arm, right arm involuntary movements, my knees buckle under me, etc. I know this because I ve had 3 previous strokes. The important thing is that they go away within a few minutes, and then I m fine. My speech becomes difficult. even though these episodes eventually go away. I went to the Dr. and did nothing but said she would order a referral to see a Neurologist. What is wrong with me? Thank you, Rhonda Emmersen