Is this normal?

Samantha

Im 28 weeks pregnant and ive got the worst headache like nothing before. Its really hard to focus, on top of being super nauseous im having a good bit of tummy cramps similar to Braxton hicks... I keep spacing out and hurt a lot, keep falling asleep but cant stay asleep very long. I thought i just ate something bad, but now im not sure. I cant call my doctor because shes already left the office, what should i do?