Breathing issuse. 1 month. please help!

Since 2017 ( blood in sputum : it's on / off ) got lungs CT scan done it's normal . Blood comes not always , but yeah sometimes streak come clotted / fresh both. Shown to chest specialist in 2017. Till now I couldn't find out the reason of blood coming in sputum. In 2017 for CT scan of Sinusitius done . Deviated septum was diagnosed. Now since 1 month I m having fever till 100 f and breathing problem especially from left side ( nostril , chest pressure ) along with breathing issuse my left chest neck arm shoulder teeth eyes also pain.. Please help , any specific test I have to get it done to find out actually cause of this . Breathing is not normal from left side there is a some pressure I have to take long breath , I get tired while speaking and walking this problem I m having since 1 month. Please help