What Causes Chest Pain And Vomiting Of Blood After An Abortion?

Hello doctor my age is.22 I am married before 1 yr. On. 2014 April I was vomit with heavy blood. And after 15 days I was consult with my. Doctor. They put some glucose to me. And told me u r pregnant. After 5. (august) month my Baby was abortioned and doctor told me you need a stitch to yr next pregnancy.and in December in the morning I have more pain between the bones of chest with vomitting. And this happen was came again in march 27 & April 27. Now I am pregnant (48)days. The doctor told to me the pain may be due to appendix. U should remove. But in the ultrasound scan report not mentioned the appendix. Now I m fear . Because if it is appendix I don t know wt I will do..please answer me clearly.