Just Had Surgery 2 Weeks Ago... Worked In Yard All

just had surgery 2 weeks ago... worked in yard all weekend... have dry mouth , tongue may be swollen and looks like roof of my mouth , back of my mouth is swollen... palpitations of heart, trying to sleep and keep waking up for air ... I drank watermelon drink last night and coconut water today to rehydrate, but mouth still dry and afraid to sleep