Pregnancy symptoms 12 weeks...is this normal?

I'll try to explain this best I can...

But I'm 12 weeks pregnant, occasionally (mostly in the mornings) I experience shortness of breath (not bad but still), slight racing heart, and I feel really warm, just internally, just kind of like when you're sick and your inside is hot but outside has the chills.

Is this normal pregnancy symptoms? Is there something I can do?