How early can pregnancy symptoms start?

Melanie • TTC our rainbow baby 🌈💛 one angel baby in heaven 😇

I’m on CD24 I took femara to make me ovulate this month but I’m not sure if I did or not. Still waiting on my labs to come back. We had a miscarriage in December & this is my second period since then both of them induced by meds. Last night I puked my guts up & I never ever throw up, ever! Could this be early symptoms or is it too early?