Question..?

I know this may not be the place for this.. but I am gonna ask anyway. If you have any negative comments then do us both a favor and keep em to yourself ;).. anyways.. I had to go to the doctor yesterday and I have a sinus infection and bronchitis. I was prescribed a 250mg Z pack. I have never taken one before so of course I Google it. Well to my surprise I read alot of things about it making people's heart race and sudden death and what not. Now I have vad anxiety issues anyway so I don't know if this is safe to take or not. I wanted to ask if anyone has ever taken this and if you have, have you had any issues with it? My husband and I are also ttc. And this is my fertile week. I was would also like to know if anyone knows if this medicine would take any kind of affect on us ttc. Thanks for any insight you might have :)