Genetic screening - sister is a carrier

So my sister (half sister, same mom) is exploring ivf and just had some genetic testing done. She called me today to tell me that she tested positive as a carrier for tay Sachs (from moms side) and cystic fibrosis.

I know that with these diseases, both parents have to be carriers for there to be a chance of their baby having it. I am unsure of my or my husbands status but my first trimester screening blood work is tomorrow and my ultrasound is scheduled for next week. I think the timing of everything is messing with me a lil.

Anyone happen to know the probability that I am also a carrier of these diseases? Our son is healthy (4 yrs old) and I had 1 miscarriage before this pregnancy. Currently 12 weeks.