MY girlfriend is experiencing nausea after lunch recently. This happened almost everyday after lunch.

Is this a symptom of pregnancy? :confused:

I thought pregnancy happened as morning sickness after waking up.

Having "morning" sickness doesn't mean its always in the morning!
It could be a symptom of pregnancy, but then again it could easily be something else.
She should see a doctor if it carries on.

I could be pregnancy, or of course it could be several other gastric issues.

I would say that after three or four days of it, I could not understand why anyone would not go see their doctor.

But with that said, she should go see her doctor