Nausea/lightheaded at only 4 weeks?

Sal • 🤰 #2 (🌈 🎀) by ovulation induction after 2 failed IVF cycles 🤯 | One beautiful boy 💙, one 👼🏻 | Hypothyroidism & lean pcos 🤨

Hi all. I am wondering if any of you experienced some mild nausea and lightheadedness at only 4 weeks pregnant. I recently got a positive hpt (hesitant to call it my BFP because it’s so faint! But there!) and I have been feeling lightly nauseated all day, and tired and a bit lightheaded. Did you get this?? I know “morning sickness” is a thing but it seems early!