12dpo and a bfn.. Ugh..

OK so I am trying for baby #2 and its is proving to be a hard task. I am 12dpo. Today my AF is due.. But no sign of her yet. With my first pregnancy I had my period till I was about 6 months. So I can't depend on the missed AF thing. I have had 2 bfn this week. I really think I have PCOS as having a AF during pregnancy is a symptom. Idk. I'm just sad ya know. I really want this. I am over 30 and don't want to possibly have a high risk pregnancy. Ugh. 😔