Mother sick after 2nd vaccination dose.

My mother had 2nd dose on 21st april and was sick afterwards. Consulted a doc on practo and took medicines. Still adter 10 days cant breath propely, food dosnt taste good ,no will to eat , body weakness, feels very low. She is 56, diabetic and i think when she got vaccined she was already sick with a little viral fever from 2-3 days. No fever came from last 10 days but other symptoms are there. Previos doctor on practo,consulted on 24th april for constipation, bodu weakness at that time, gave medicines and told no need to wory abt corona,only vaccin symptoms. Should we consult again? As she is facing breathing/oxygen problem. She can not take a long breath,on trying she coughs. Whom should i consult?and what should i do. Thank you in Advance