spitting up

so my almost 6mth has been really spitty up for the past few days. ive been feeding her homemade purees with the baby bullet and she eats half of the little jars that comes with it afterwards she wants to breastfeed I always burp her but she seems to spit up a lot afterwards and then she gets really fussy . Even if she doesnt get puree she spits up after breastfed. my husband thought maybe her tummy is just getting use to the normal food. i just dunno she never use to spit up as much as she is.