Pain in chest. Within the given range.

I have little bit pain in chest sometimes when i sleep towards the tummy. i consulted a general physician few year back and he told me that it is muscle pain. and i changed the sleeping posture then and i got relief that time. and now i sometimes feel that my chest is very dry and mucus is not coming up. and i fell my throat is surrounded with mucus inside. i also got a bit thin these days. might be because my father is diagnosed with colorectal cancer and i am very stressed out because of this. i've done a cbc, lipid, thyroid and vitamin and blood glucose test done. please tell me do i need to go for and other test or the reports are good i can only attach two photos rest all the reports are within the given range.