My husband resently, last Saturday,multiple blood clots-both lungs, in hospital 5/17 - 5/19, has been on oxygen at home,injections-now done with those, and is on warfarin. (INR)-was at 2.1 fri.5/23.originaly was 1.3,but now doesn t go back for another blood draw until tues.5/27.but has been coughing and coughing,and now says he hears gurgling in chest,and only feels better if he stands and leans on something. (coughs up and spits out clear fluid). can t get any sleep,even has some kind of sleeping pill from dr.too,but really coughs more at night. what can he do?