Hi thanks for your question.
Your suffering from rhinitis
that is common cold
.Rhinitis can lead to bleeding from nose.in pregnancy nasal mucosa is hypertrophied due to hormonal
effect,this supper added with rhinitis can increase the chances of bleeding during pregnancy
.Medicine you have taken are OTC drug for cold,flue and spressing cough
.These drugs though safe during pregnancy belong to class C of drug classification,which means these drug should be only taken by pregnant women,when benefit is more than risk.I would suggest you to consult a physician who may be able to examine you to acess the need for these medicine and if needed may give you prescription
Hope this answers your question