Amoxicillian and pregnancy?? Safe?

I'm most likely not pregnant- we've been trying for over a year and a half. But I got the faintest line on a blue dye test (so I don't really trust it) yesterday at 9 dpo. However, I had a sinus infection so I'm still finishing my amoxicillian (the antibiotic I was prescribed). Basically I'm just wondering if anyone knows if amoxicillian is safe during pregnancy?? I'm just kinda worried about it now.