I need a little hope😥

I recently found out I have PCOS which explains a lot... Im 18 and have very irregular period unless I’m on birth control pills, when I take the pill i never miss a period but if I’m not on them I’ll go for months without one, is anyone else similar to me in that case? I also gained about 70 pounds within one year despite no changes in my diet or activity level. Will the pill help control my weight since I have pcos or will it still cause me to gain like other women experience? Im terrified I will never have a family now😓 the thought of never being able to get pregnant is constantly on my mind now. Can you all tell me your experience with conceiving also? Share with me what you can ladies, I know hardly anything about this yet😞