For context, I (24F) have had PCOS ever since starting my period when I was 11 and have also dealt with PMDD-like symptoms (never formally diagnosed, but gyno said she highly suspected it). I have worked for years to alleviate my symptoms through supplements and lifestyle changes. While this did help and I became a bit more regular, I still dealt with severe emotional, mental, and physical side effects during my luteal phase, whether I ovulated or not. I eventually decided I wanted to try birth control as I do not want to get pregnant anytime soon, was worried about increased endometrial cancer risk due to long cycles, and I wanted to see if it would improve my mood.
First, the few negatives I experienced. During my first week, my appetite was wiped out and I had a consistent headache. These subsided after that week, but I do notice that my appetite and cravings are curbed compared to when I was off bc. I also had annoying breakthrough bleeding and minor cramping throughout the month, but I also know this is normal while trying to adjust to the hormones (especially since Yaz has a lower estrogen dose) and I wasn't great about taking it the exact same time everyday at first (would sometimes be 2-3 hours off). My libido also tanked during the first month, but it has dramatically increased this month, far beyond what it was pre-bc.
Now, onto the positives. I feel like a completely different person for the better. My emotional and physical state are much more stable, and I don't wake up every morning wondering who I will be that day or what physical side effects I will be dealing with. I seriously don't remember the last time I felt so normal (is this what men and their 24-hour hormone cycle feel like everyday??). I have a much better grip on my mood and emotions and my husband commented that he thinks I am a happier, more stable, and well-adjusted version of myself. I carry less water weight than I used to (the progestin in Yaz has dieuretic effects), I don't have all of the GI issues I used to have, I don't throw up and writhe in pain the first day of my placebo period, I am actively losing weight because I have better control over my appetite, and so much more. I genuinely cannot believe I went through 13 years of having a cycle and dealing with these issues. My life is fantastic and I love where I am at, but I do wonder what else I could have accomplished and what issues could have been avoided if I had taken bc earlier. I know I am only 1.5 months in, but I am very hopeful for what is to come.
If you are in a similar boat that I was (PCOS, PMDD) and are curious about trying bc, please do if hormonal bc is an option. I can't guarantee that Yaz, or any other hormonal birth controls, will help you the way it has helped me, but it is more than worth a shot. Don't let the fear-mongering online scare you and educate yourself on the costs and benefits of the medication. While every medication has its side-effects, PCOS and PMDD also carry significant risks mentally, emotionally, and physically in your life (nevermind pregnancy!).
I hope this is an encouragement to anyone who is scared to start bc like I was - it can be an amazing addition to your life!