Coming soon?

I am 34+4 per the dr (dating scan in beginning) but according to my tracker I should be about 1-2 weeks ahead of that. Measuring 38weeks per last dr appointment. The last couple days I have felt EXTREME exhaustion, I’ve had nausea, vomiting, headaches, some contractions but nothing consistent, loss of appetite and quite irritable. Feeling just off. Idk how else to explain it.

This is baby 3 but I’ve never gone into labor on my own before.

Am I going crazy?