Hi -I have been having back pain on the left side that had been xrayed and diagnosed as a sprain. However, I'm starting to develope a cough and that area still hurts. Last night I was so out of it, I ended up going to bed about 9:30, with eyes completely blood shot...I am also a new mother of twins, they are now 7 months old...my question is, can this be a misdiagnosis? My doctor was originally fearful that it was a possible embolism or pluracy being that I had cancer up until July of this year...If you need more info, my email is included. Thank you.