Passed out 17 weeks ... What should I do?

I passed out earlier while outside I'm 17 weeks pregnant, woke up throwing up. While trying to walk inside I almost passed out again. I hosed my self down with the hose which was close. This happened about an hour and a half ago, since then I've tried eaten protein and have had lots of water. I'm still so shakey and out of it still throwing up. I tried calling my doctor and left a VM for a nurse and haven't heard back. I feel like my heart rate is up or blood sugar is low.... Should I just nap and try to cool down and keep hydrated or go be seen?