I agree to the motrin advise...Do not start mixing drugs...Even otc drugs...They still can have a very adverse reaction.
I also recomend you go and see the doctor regarding the sinus pain...May be an infection afterall and you would need an antibiotic for that.
Do you suffer from alergies and or asthma currently?
If you are interested in some potentially helpful solutions to the above conditions, please let me know.
Deb