34 Weeks 3 days labour reassurance??

I'm currently 34+3 and since yesterday afternoon I've been struggling with lower back pain -very dull and achy and I've also being experiencing a stabbing like pain down below, I know it's not babies head positioning as she is lying transverse.. Last night I lost my mucus plug and have being getting some tightening pains which I'm guessing are Brixton hicks??