Nausea 7dpo- morning sickness?

july

The last two days ive had extreme nausea, but the weird thing is it has eased both days around 2-3pm and returned late evening. Does this sound like early pregnancy nausea? Also started cramping on and off since 6dpo and extremely exhausted and headachy... are these common even before a positive test? (Took one this morning -)For reference i certainly had symptoms earlier than positive test with my son but they were different