Beyond the possibility that your brakes are rubbing, my guess is that you just need to tweak your fit and position. It's possible that your seat is too low and/ or too far fore or aft. You'd be surprised what a few minor modifications can do. Hopefully, your bike fitting will help iron it out.
Live with intention. Walk to the edge. Listen hard. Practice wellness. Play with abandon. Laugh. Choose with no regret. Continue to learn. Appreciate your friends. Do what you love. Live as if this is all there is.
--Mary Anne Radmacher