Diclectin delayed-release tablet making me so tired.

Hi mummies, my gynea prescribed me with Diclectin anti-nausea pill as i have been throwing up. I took this last night at about 10pm before eating some supper but up till now (already almost 7pm) i still feel so tired, sleepy and restless and i have been sleeping the whole day already.. Is this normal? I feel so terrible 🥴 Please help!