Birth control made my hair go wavy!...?

I’ve always had very straight fine hair... I was on birth control (pill form) for 2 years. I went off the pill in April 2017, and since then my hair has been growing out more and more wavy!!! Has anyone ever had their hair change after stopping birth control?! (Lol as you can see in the 3rd pic, the tips of my hair are still very straight.)