Could morning sickness and hangover be described as feeling alike?

Im not sure if um pregnant yet or not, but When I woke up this morning, I slept longer than I usually do. Slept almost 12 hours and was still really tired. Felt nausea, headache, dizzy....just like a hangover. But I didn't have anything to drink last night so it wasn't a hangover! Could it be morning sickness?