movement at 40 weeks

I'm 40 weeks, due date was yesterday. Today I haven't really felt the baby move, only felt a. Few kicks here and there but rarely.
Im kind of getting worried and would like to know if the baby becomes less active the last days or should she be moving like usual? I'm laying on my left side right now and felt a tiny move but not like she usually does. I don't have orange juice at the moment either. So any other ways to know?