Symptoms after methotrexate for ectopic pregnancy

Carling

Found out I was pregnant on January 2, had some cramping off and on. Friday went to urgent care because cramping was intense when using the restroom. Diagnosed with a UTI and sent over to the ER for an ultrasound. Confirmed ectopic pregnancy and given methotrexate in both shoulders and sent home Saturday morning. Cried and slept all day, was a bit more productive Sunday. I woke up this morning in extreme pain, like doubled over could barely walk. Is this normal or is something else going on?