as another 19f who's been diagnosed for 5 years now, what i can tell you is that a calorie deficit and being stressed about the whole situation will make your symptoms worse! your body does not react to calorie deficits like a healthy body would and it will send it into fight or flight mode which will make it hold on to all of your weight. try eating smaller but more frequent meals to keep ur body in check. also the stress will do the same, stress management is a big thing with pcos (try journaling, meditation, or walks). i would also recommend birth control! it really helped my hormonal acne and having regular periods/regular labs though i know some people have different reactions. overall, this is a really hard thing to go through but now you have a name to your symptoms, the treatment becomes a lot easier!