“Morning” sickness?

Update- thank you for all your responses! So weird to have symptoms this pregnancy!

Hi mommas!

I’m 6-7 wks pregnant with my 2nd and I’m wondering if what I’m feeling is morning sickness. I feel fine in the AM but then sometime in the afternoon (2-3) I start getting indigestion, heartburn, mild nausea, that lasts all night. No vomiting and I still have an appetite. Sorry if this is a weird question but I had zero symptoms with my first and I always thought morning sickness was throwing up in the morning haha.

Thanks!