Bfp Signs😐

Our sons school called my husband today by mistake about 'his daughter' he has a new number and we have a son but the little girls last name is Austin which our last name. Our son came home and asked us for a brother or sister, and my husband has been eating like a damn horse despite the fact I feel normal and I just ovulated yesterday he's swearing that these are signs I'm gonna get pregnant this cycle.

Did anyone have signs like this before becoming pregnant?

Does anyone even believe in these kind of signs?