36 weeks…do you think i’m slowly going into labour?

the past few days i’ve been EXHAUSTED. yesterday i was extremely nauseous (i even threw up) and had a bad headache all night. today, i’ve been tired. not as tired as yesterday. but for the past 3 hours i’ve been getting cramps (feeling like period cramps) along with some braxton hicks and my lower back hurts a bit. it’s 6:30pm and i’m really tired and starting to get a headache.

i’m not sick or anything. thoughts? do you think i’m going into labour? or is this normal?