Feeling down

So I am feeling down today. I feel like it's never going to happen. Yes I know your not out till AF shows which is the 5th for me but my fiancé and I did the BD a lot last weekend cause my app said Friday was my big ovulation day but then Monday I felt like I ovulated so now I'm worried I missed our chance. We have already been trying for a little over a year on and off. I just want w baby,a sibling for my daughter.