Hi I took a TB test today and around 4 o clock this evening i came on my cycle, it s very light but it s still on. However, im only asking if the tb test have effects on menstrual cycles? because I have the nexaplanon birth control and I haven t had a cycle in three years. A registered nurse told me no, but she was very rude so I end up ending the call. Another question I have is, could this be happening because my birth control is almost time to be taken out or no ? If you answer no to either one of questions could you please explain to me what could be the cause of this. Thanks for listening