What do I do??flu!!!!!!!!

My brother seems to have the flu not sure but he has some symptoms and he came into town to visit us for thanksgiving at my moms house he wants to see my daughters but i know for a fact he will hug and kiss them and he gets so offended if I say don’t do it, I’m also 22 weeks pregnant and scared I might also get it since one my daughters have it I am very likely to catch it, me and my daughters did get the flu shot 3 weeks ago but there’s still a chance to catch it, it’s also my nephews party today everyone will be offended I’m not going but what do I do they don’t think the flu is a big deal but I know it’s way more dangerous for pregnant woman and small children,what would you do???suggestions???