First time on Nuvaring!!!

So today I went to my first gyno appt, and I am perscribed Nuvaring birth control. I have NEVER had birth control before and tmrw I am picking up the perscription from walgreens. So far I have read mixed reviews about weight gain and mood swings. I have just reached my weight goal at 120 and I am finally in a healthy, happt relationship with my boyfriend! I have never felt better and I am scared tha the mood swings might scare my boyfriend off because I already am a little too much to handle ( attitude problems💁🏼) and I do not want to break out or gain weight. I just need some help and guidance before I do anything!!! Please help ASAP! Thank you❤️