6 months old baby not eating solid

Laraib

Hello everyone my baby girl is 6 months old now.i started solid food when she was 5 1/2 and she loves to eat cereal and fruit puree. After her 6 month vaccination she suddenly stop eating. I am trying to give her solid from last few days but she dnt want to eat she spit every thing out.also she dnt like to take bottle.now she is only on breastfeeding.

She was under weight in her last 4 monthd checkup

Please help me

I am really very exhausted

what should i do now?

And how i can switch her from breast to bottle please help!!!!!