Thanks for the query to H.C.M. Forum.
Birth control usually develops nausea ( in few patients vomiting
just due to hormones and this is a natural phenomena, not to worry).
For this side effect you can take pantoprazole
tablet as when requires.
Now main concern is difficulty in breathing, cramps, below ribs pain, blocked sinus.
These symptoms may be due to allergic bronchitis
with super added infection , in my opinion ear infection
don't causes such type of symptoms.
Consult a physician and get his opinion.
Need not to worry this is a common complaint just due to allergy.
Hope I have answered your question .
If further any question I will help.