Early labour? Nearly 27 weeks

Hi ladies, I've had several symptoms the last two days and wondered if anyone has these or has had them and what's happened? This is my second baby.

Symptoms

Period like cramps as if I'm about to come on

Lower back pain

Left twinging/shooting pain every now and then

A general weird feeling in my lady bits

Baby moving a lot more than usual and is flinching a lot

Bad Headaches everyday for a week or too

Feeling stressed which is natural due to everything going on.

Any advise or anyone experienced this?