MY BFP turned out to be Blighted Ovum!?

well like i said yesterday, that's it i guess no more hope! i've got Blighted Ovum so no baby for me anymore:( I've got a second opinion, both dr said i have an empty sac. the Dr said to wait and let nature take care of it, to miscarry on it own. i don't know how long it will take, as i don't have any bleeding nor pain. what do u think i should be doing? resting or do lots of activity to make it easier to miscarry on it own? i still cant believe what's going on i was so happy getting my BFP at 10 day's and now am 8 weeks after ttc for 8 months with no luck and wth pcos.i cant believe am going to start ttc all over again!! ttc journey is very stressful! plz pray for me, am so still in shock! if u have any idea what should i be doing while waiting for the miscarriage plz let me know. am praying this would never happened to any one:( its sad and very depressing.