I don't have any medical background or anything, but I was stung once during my last pregnancy and once during my current one and to my knowledge it had no lasting impact. The 1st time I was around 10 weeks and the 2nd time I think I was only 8 weeks along. Both times it hurt and the site of the sting got a little swollen, but I had no large-scale allergic reaction. And to my knowledge, my daughter had no ill effects. I'm sorry you got stung.
Mom to 2 Daughters born in 2010 & 2012, and someone new Nov 2015