You can make this into one sentence.

내일 저는(If you want to make the sentence informal using ~요, you should use 저 instead of 나) 병원에 갔다가, 헬스장에 갔다가, 도서관에 갔다가, 일하고 잘 거에요. 

내일 ^_^

내일,나눈병원에가요.
헬스장에가요.
도서관에가요.
일해요.
자요.

This is a very boring text without any conjunctive but I hope the grammar is correct. ^_^
Since I am a beginner, I do not know any good words for connecting the sentences...
잘부탁합니다 ^;;^

Words in blue are my suggestions.

내일 ^_^

내일,나는눈 V병원에V가요.
헬스장에도 가요.
도서관에V가요.
일해요.
그리고 나서 잘 거예요자요.

This is a very boring text without any conjunctive but I hope the grammar is correct. ^_^
Since I am a beginner, I do not know any good words for connecting the sentences...
잘부탁합니다 ^;;^