First time!

Sooo I’m 26 years old and I’m a virgen lol I’ve been engaged for 6 months now and we are ready to get married on September...we decided that the best thing for us now was not to have babies so I started my pill today since I wanted kinda I try out period before I get married!!! Not going to lie I’m super nervous since everything it’s so new for me... I’m terrified about the weight gain and the acne part of it... any suggestions?