Hard lump lower right abdomen

Megan • Pregnant with our rainbow 🌈 baby

Hey ladies! I’m 17 weeks pregnant with my first. Last week I had doubled over cramping on right side and doctor said it’s probably just ligament pain. This morning while laying on my back I noticed my lower right abdomen felt hard and like a lump. Is this normal? When I do the fetal Doppler the heartbeat is lower left side.