40+3 and seriously hurt myself. What can I take/do?

So my 1yo decided to try and launch herself out of bed. I naturally lunged forward to catch her and heard a pop and shooting pains ran up my back and down my legs. I've no clue what I've done but getting up and down without help is now almost impossible and far from painless. Has anyone any idea what I can do to help as its going to make labour a nightmare!?