Looking at your horoscope we see that your Lagan is Cancer and Your rashi is Libra. You are born under the Swati Nakshatra.
Saturn is the 8th lord and it is a functional malefic planet in your horoscope. The Dasha period of 8th lord is never good irrespective of if it is retrograde or not retrograde.
Saturn is the planet for delays and obstacles, and there Yes you will face obstructions during this period. Having said that the remedies of Saturn are very important and should be performed for reducing the malefic effects of Saturn.