Can I be pregnant again?

Landa • Christian 🙏🏼 Angel baby👼🏻 2 earth-side❤️💙
I had a miscarriage last week Thursday (4 days ago) at almost 6 weeks. My husband and I were intimate 2 days ago. Today I'm feeling nauseous and my body temperature is back up (like it was when I was pregnant). I want to be pregnant again, but I'm trying not to get my hopes up! It could just be the flu 😞 is it possible to conceive THAT quickly?