Could I be pregnant

So I had sex on January 17 I then had my period on the 21st which lasted until the 24th my period ended and 2days later I was spotting light pink for 2days I only seen it when I would wipe and it wasn’t a lot then all day yesterday I was feeling super nauseous Same as today I feel like my body is throwing me off but I could be overthinking it and it’s to early to take a test