You made the right decision. Start riding more, experiment with your fit if you have obvious discomfort anywhere (give your body time to adjust to anything new), and hopefully you'll be fine. If you have persistent pain, then a bike fit may help, but lots of people never pay for one. After a year of riding I got a bike fit because I was riding longer and harder and wanted expert guidance on knee pain flare-ups and advice on a better saddle. I'm happy that I got the fit, but I don't think it would have been as helpful had I gotten it right when I started riding.