I Took Cytotec And After Teen Hours Blood Came Out

i took cytotec and after teen hours blood came out and i feel so cold , more blood then came out and i feel some pain , after all i decide to visit hospital , they gave me injection for Embryo install , when i realize what they gave me i asked them to stop , and they told me if i am not going to take the rest of injection i will loose my embryo , any suggestion for my situation , what i have to do ?