Vomiting 10dpo?

Candice

So I’m 10 dpo, 11 days post IUI, haven’t expected any symptoms because I know pregnancy signs are rare at this point, but woke up in the middle of the night last night vomiting. I thought I’d come down with the flu but felt completely fine since. Negative pregnancy tests. This has never happened, even when I am sick it never actually vomit. Could it be morning sickness already? AF isn’t due for 4 days. Thanks for your insights!