Hello, well with my first it started when i just couldnt sleep and was uncomfortable about 6hrs ladour started having pains like every 20 mins tightning pains in my back mainly i went out to lunch the pains got worse so i told my sis im pretty sure im in labour so i went home and went to hosp when pains where 2 mins apart with riley i was induced,you may also have a bloody show waters breaking i think the most common one is back pain.