Cramping and pain at 13 weeks

Has anyone experiencing cramps in the lower abdomen or pelvic? These cramps are painful! I went to the ER Friday, they said it’s probably my abdomen muscles and ligaments are stretching since this is my first pregnancy and also, my growing of the uterus is making its space. I spent all Saturday lying on the couch trying to find a comfortable position and also I called a nurse practitioner, she stated as long as I don’t have any spotting and bleeding I will be fine. Today Sunday, no change, I still feel like someone pulling my pelvic muscles, shooting pain in the vagina and and rectum luckily no spotting or bleeding. I have a appointment with my Gynecologist in 4 days and feel like it’s far! Tell me that I’m not alone going through this