is this normal? braxton hicks I think.

I'm 38+4.
Last night I was having period type pains, lying down or even when I was stood up etc.
Went to sleep, woke up this morning and they'd gone.
Got out of bed this morning and within 5 mins it's started again.
Is this braxton hicks? I've had no bloody shoe but have had a lot of yellow mucus.