I Have Been Taking Leaped The Past 2 Months. While

I have been taking leaped the past 2 months. While it has helped my depression I am extremely exhausted in a not normal way daily, Lost my sex drive and can't go to the bathroom. Also last night I had the chills and sweat through my shirts and the bed and have body aches for The past 2 days. How do I ween off lexapro and do I have a more serious condition?