<s>[INST] I took omnicef 300 mg twicw a day x10 days for a sinus infection but it didnt help. every morning i cough up alot of secertions, cough through out the day. cant seem to get a good deep breath. I take clairinex every night before bed.  do i need another antibiotic or just deal with it and hope it goes away. i also have been feeling really bloated ever since this has been going on. [/INST] HiThank you for asking HCMI have gone through your query. You shouldn't take antibiotics with out any prescription from a doctor. It can do more harm than good. Bloating you have is most likely due to  dysbacteriosis after antibiotic therapy. For sinusitis not always antibiotics is needed. Nasal decongesants like phenylephrine or local decongesants like oxymetazoline, NSAID like nimusulide and antihistamine like cetirizine will be helpful. But in case of moderate to severe infection antibiotics can be used judiciously according to need. Omnicef is cefdinir which is quite strong antibiotic. If there is no improvement even after decongesants and antibiotics then x ray of paranasal sinus should be done and puncture and drainage of sinus will be needed in some case. Hope this may help you.Let me know if anything not clear.Thanks. </s>