Nausea or nerves?

I finally got my BFP yesterday after ttc for over 2 years! I was barely able to eat yesterday because of my nerves and just all the feelings running through my body! I woke up this morning super early and haven’t been able to sleep. I’ve been nauseous and have had an unsettled stomach. but I am not sure if it’s from being pregnant or just a lot of nerves kicking in.

I don’t want to overreact and say I feel sick the morning after I found out I’m pregnant but has this happened to anyone else? Or is it just nerves and I’m overreacting?