Will I ever be flexible?

I did Yoga again today, this time I completed 37 minutes! Yay me that is an 11 minute jump from the other day. Immediately after the work out I felt really loose, now here I am a couple hours later and I'm not sure I feel a difference. I want to be really flexible(along with a few other health and fitness goals) Is it true, can yoga truly make you flexible? In time we will see, Thanks for reading. See you tomorrow.