Too much nausea

Dolores • 25 👧 My family is my world ❤ 💙 R.I.P my little angels 5-29-13 👼 8-31-19 👼. Everything happens for a reason 💕 ❤💙

My af is a week late according to glow i had spotting for 2 days seems to have stopped today making it day 3 but now I'm full on nauseas and have a huge headache 😭 could if be af showing up? Jusy had a a chemical last month but I'm sure i can't be pregnant right away can I? Thanks in Advance time to lay down a bit and see if this passes 🤮😪