I’ve been in early labor for 48 hours!!!

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I’ve been having contractions for 48 hours. They started Thursday after I saw my doctor and weren’t regular. But they got to about 10-15 minutes apart and very consistent by Friday morning. It’s now Saturday and this morning they were 5 minutes apart and VERY strong and painful. I went to the hospital, only 1CM and 60% effaced so they sent me home. I also lost my mucus plug and had bloody show last night and today. I’m at my wits end. I just want to know why this is taking so long? And why am I having contractions if they aren’t doing anything?!