Two miscarriages

I have had two miscarriages one in September and the other in December. I am just wondering if anyone else has experience this. Also how long they waited before trying for a third time? I kinda feel like I dont want to keep trying this last time was super hard on me. I have pcos. we have been trying for over two years. I'm just not sure I can handle another loss. If you have experience this is there anything you changed like weight or anything like that? Thanks in advance!