Strep throat

Hi everyone, so my brother stayed the weekend at our house and he complained of a stratchy throat. (He has terrible hand hygiene). He called me yesterday and said he tested positive for strep and is now on Amoxicillin/antibiotic. I’m freaking out because now my throat is mildly scratchy and I’m worried about taking an antibiotic in the first trimester. I’m 5w3d. Worries about miscarriage and/or birth defects. Anyone have any info on taking antibiotics the first trimester?