I think my dog is in labor or will be having her puppys soon but ??

i dont know.... she had some clear discharge and was actin weird or differen... (she would freak out and look at her vigina) but then she was normal and then freaking out again all randomly she would shaking and stuff...she has been like this since this morning about 13 hours ago...i checked her temp. and yes it is below 100F but its 99.6 so i dont know.....what you guys think?? help!! im tired of not being sure because im just next to her makin sure shes ok....