I agree with the above member. You could have a respiratory infection. I would drop in on my doctor, without an appointment, and tell him I am having serious respiratory problems that can't wait.
I have mild athsma and I can get phlegmy a lot, although I have never experienced the spotting, maybe try and get too a emergency clinic or something, you have to consider anything weird happening to be a emergency during pregnancy, although Im sure its nothing serious, but I would not wait weeks. Let me know how you get on ! x