help plz..

has anyone else that 5 weeks pregnant been having really bad leg pains? few days ago i went to the er and they hooked me up on an Iv and im not sure what they gave me but ik it sum for nausea as well.. acter that my left legs been hurting but its like a numbing feeling.. its kinda where i cant sleep cause it hurts and Tylenol helps but i refuse to take it everyday cause im scared of hurting my baby.... anyone know why please help me figure this out...

thanks -lexi🌟