I passed out twice in grocery store

Yesterday I was recovering from the flu but needed to go to the store (and I'm 10 1/2 weeks pregnant). As I was leaving I started feeling light headed and passed out in the entry way. A man helped me up and I got a little ways into the parking lot and fainted again, taking the cart down with me and spilling my groceries everywhere. So embarrassing. Someone helped me to my car and another person called an ambulance. Rode in the ambulance to hospital because my boyfriend had just left for a business trip and my parents were 45 minutes away. They gave me a liter of fluids and sent me home. So embarrassing and scary, and it sucked that it happened my boyfriend had left just a few hours ago! So moral of the story, stay hydrated!