After IVF transfer, it is not normal to have left-sided abdominal pain, this situation should be considered the following possibilities: 1, the possibility of ectopic pregnancy, if after embryo transfer, the embryo wanders to the left fallopian tube ectopic pregnancy, the patient may have left-sided abdominal pain and discomfort, this situation should be paid great attention to, if it is determined to be ectopic pregnancy timely treatment, to avoid rupture. 2, the patient The patient may have inflammation in the adnexal area, such as inflammation of the left fallopian tube or ovary, and the patient will have pain in the left side of the abdomen. If it is chronic inflammation, it can be temporarily left untreated, but if it is acute inflammation, it must be treated with antibiotics. 3. Patients may have colitis or ureteral inflammation, resulting in pain in the left side of the abdomen, and most of them have clinical symptoms such as diarrhea or frequent, urgent and painful urination, which need to be treated with timely examination.