i used to have a regular cycle now i dont?

Ashley • TTC baby #1 with my hubby. This is will be my first time being pregnant & TTC so everything is very new to me
i used to have a regular cycle but now it has changed and i dont know why. should be worried? also ive notice by leg hair has pretty much stop growing, i know i should be thankful i dont have to shave & i am but at the same time im worried