I'm struggling with DS2.....he is almost 14 months old and is a right little jealous PITA

When he got upset that I held his NB cousin I thought it was cute....but now it extends to even his own siblings! I can't even give the other kids a cuddle with him around or he starts crying and trying to push them away.

It's all come to a head today cos DS1 has woken up sick and is need of extra cuddles, which DS2 is just not allowing!!

What can I do? I've been just trying to ignore him, or give him a quick cuddle too but he just screams and screams and gets SO worked up, and he doesn't usually get so upset about stuff.