Please help me i think i have a septic problem?

today when i flushed the toliet the toliet over flowed and did not flush, and then water started coming up in my bathtub, and it takes a very long time to drain outta the bathtub. both of my bathrooms are doing this, but one is worse than the other. what can i do? do u think this is a septic problem, if so are those things like rid x and stuff good and will it help? sry i am just kinda frustrated because i cant use the bathroom!!!!