Yes! I had the same problem twice in two months. It was severe. I couldnt breath after only taking 2 or 3 steps. Basically, I bottomed out with my hemoglobin and platelets and was bleeding somewhere and losing blood. Had 9 transfusions. I've been dealing with problems with my blood/anemia/wbc and RBC/platelets for years but recently developed these issues. I almost died tbh. My hemoglobin was a 4. But those very symptoms make me cringe because I know EXACTLY what it's like. You need to see the Dr.

Today I went to the doctor, they told me that I needed to come back at a later date to get blood work done as they decided to just get glucose and such done as well and I ate just before. Although, next week I will definitely be getting it done as they highly recommend it.

That happened to me before I found out I had an iron deficiency so that might be it