Dull stomach ache - labour?

Hi everyone, I've got a dull stomach ache, in my lower stomach, it's not exactly bad it's just really uncomfortable and I've needed to suddenly rush to the toilet a few times today (tmi 🙈) - is this it? Is labour going to start soon? It doesn't seem to be getting any stronger! Baby is fully engaged and midwife seemed confident baby will make her appearance soon! Who really knows 🙈 forgot to say I'm 39 + 6!