My 7mo DS has DMP allergy, is EBF and both him and I are dairy free an soya free (i suspect soya as similar reaction but not as strong). I'm weaning him gradually and not introducing anything to drastic. But for about 4 weeks now he's started to projectile vomit, initially it was only about once or twice a week but now it's once a day today it was twice. I'm not talking about a little posit I mean he covers me, him and the furniture around us 
Could this be related to allergy? I'm stumped at what it could be.
We've got paediatric allergy apt in July but am going to see GP in mean time as worried about him losing weight (thou he is a chubster).
Anyone's little ones had projectile vomit as a reaction?
I know it might not be relates to allergies (as my DH thinks). But I can't help worry that he is having something that he is reacting to.