When someone is puking because of pregnancy how long does puking usually last? Do they just puke once in the day and they're done or can it go on for a while. My mom just started puking about an hour or 2 ago and I assumed automatically that she has the bug or something and of course my obnoxious grandmother had to comment and ask my father if she's pregnant(my parents are separated and my mom has a boyfriend). It made me mad because right now my mom doesn't need my grandmother's obnoxious comments with the stuff she has going on. She doesn't even want to be staying here but she doesn't have a place to go right now. Has anyone ever experienced "morning sickness" at 10 at night?! She also never had morning sickness or any kind of sickness while she was pregnant with me or my sister.