Morning sickness or anxiety?

When something big happens in my life (usually an event like my wedding or a breakup) I have terrible anxiety and feel nauseous. The rest of the time I am fine and these “big events” don’t happen too often. I am 4 weeks pregnant, just found out two days ago and the day after I found out (yesterday) I felt so sick almost all day and smells made me nauseous. It went away around 1pm but came back when I laid down for bed. This morning I feel a little bit better but I feel hungry nauseous if that makes sense.

Has anyone experienced this and what helped?