Frustrated.. Rant

I'm super frustrated today and want to rant. I've been quite irritable and moody the past few days so I'm sure I'm going to start my period any day now.. So this will be my third month of trying and no good news. I've also been using opk to help and this month it said I was ovulating later than this app so my whole fertile week shifted from what I thought, which is very frustrating. I'm also using ovia app and it is saying different info than this app.. I know 3 months isn't that long to be trying but I was pregnant with twins and lost them back in October at 19 weeks. It was the worst experience of my life. Now I'm just so impatient to get pregnant again and finally have a baby. Also, it only took 2 months of trying with them so I was really hoping it would be fast this time around too. Sorry for the long post.. Just sad today.