Sick before expected period?

Kimberlee • 28 | Married | Two Boys, & pregnant with our Baby Girl! ❤️
Earlier today I had watery discharge and now I am feeling really, really sick. Nauseous, headache and maybe a little bit of a fever. Anyone who experience this before their period? I've never felt this sick which is why I'm trying to seek advice! Thanks in advance, ladies 💓