antibiotics and pregnant

Hey ladies!  So I had my first appointment with my OBGYN this past Friday, I am currently 10 weeks and 2 days pregnant.  We got to see the baby and it had a strong heartbeat, it was AMAZING!! Well I got a call yesterday that the urine test came back and I have a UTI (first UTI ever) and I need to take antibiotics 4 times a day for 7 days. I had no symptoms at all of a UTI but they sais this is normal.  I know the doctor knows what she is doing and I trust her completely but I am freaking out a little about taking these antibiotics!  Has anyone else had to do this in the first trimester?  Thanks for your input!