Lower left pain, is it normal?

Hi all, my wife is pregnant for 18 weeks now, she has a fibroid in her uterus and is suffering pain from the lower left, and sometimes on the right. Is it normal? I’ve been looking into related articles and most says that it’s because her uterus is expanding. She is taking Panadol to relieve the pain but it doesnt seems to be working so far. Need some advice here 🙏🏻