Stopping Unisom+B6 for nausea?

For those of you who took unisom+B6 for nausea in the first trimester, did you feel like you had to wean yourself off? I know it’s not supposed to be habit forming, but the few times I’ve tried out not taking it (to see if my nausea was over) I had sooooo much trouble sleeping and just felt awful the next day. Just curious to hear other people’s experiences!