UTI and Pregnancy

So I finally checked out my frequent urge to urinate since I was starting to notice my pregnancy symptoms was really unusual for only being 7w at the time. Went to the hospital and got UTI confirmed. They prescribed me Keplex to take 4x daily for 7days. I've been taking it 1x daily because im afraid of it hurting my little jelly bean but it works. Takes away the pain during urination and extreme fatigue and headaches.

So I am wondering if anyone here has had UTI during pregnancy, if you were prescribed KEPLEX and did it hurt your baby in any way? Were there any home remedies you can advise to help my body eleminate the infection? And for the 2nd time, would it hurt my baby?