lower back ache on one side is this start of labour?

Ash

Hey ladies, I just need some advice please I’m 39 weeks 3 days I have a constant lower back ache on my right side for two days, had a few different stages of cramps in pelvic area but went away but back pain is constant and have had extreme pressure in pelvic pressure for weeks now.

I’m just wondering if you could PLEASE tell me if the constant back ache could be a sign labour is starting or not really?

I would really appreciate any help or advice xx