9wks 3days questions

So today i was in ER for left side pain that shoots to the back. Doctors gave me half a dosage of morfin and some meds to keep me from throwing up. They thought i had kidney stones but after the ultrasound they said everything fine and baby is fine (157bpm) my question is did anyone experience this if so does ur body still feel weak afterwards? I slept when i got home but still feeling so drain, pain is gone and i am catching hungry pains n i am nauseous once again