advice mummas? labour near or not?

Kalanie
For the past 3 days my back has been absolutely killing me on my right side near my waist and down my lower back, I've been weak and my legs were so sore and weak also and I haven't been able to move from bed other than to go to the toilet due to the pain. 
My back ache has been so much worse today and now as I'm sat in a chair it is creeping around to my right hip/bottom of bump I guess with pains in my stomach coming and going, not like contractions they feel more like LO kicking extra hard and stomach going a bit tight. I'm 38 weeks today, haven't lost my my mucas plug, as far as I'm aware. Any advice??