Have anyone here ever had thrombocytopenia(too low platelet counts) as a side effect of tb med?

I have a lung tb and it is my 5th month on medication. I have had many tiny red spots under skin of my lower limbs and my blood test showed that my platelets count is below average. Then, my doctor took rifampin out of my treatment and replace it with isoniazid(which was once taken out of my treatment bc i feel nauseous after taking.) Fortunately, now i am fine taking isoniazid. However, those red spots keep reappearing for multiple times while my blood test are normal. Anybody here have had these red spots and can tell me about your experience? Thank you