diclegis and extreme fatigue?

Ka
Hi ladies! Has anyone else take Diclegis for morning sickness? I am nauseous 24/7 and was given a sample by my RE. Took it for the first time last night and while I have no nauseau today, I am EXHAUSTED. I work a desk job from home and I honest to God cannot keep my eyes open. Does this symptom go away the longer you take it? Honestly the nausea is better than not being able to stay awake. If I didn't work it would be one thing, but I am the breadwinner and can't mess around!