Wow - all the BFPs are great news! Congrats!!!
Hang in there Papa. Sadly, I so understand the roller coaster and the disappointment. When my partner was trying to conceive our first child it took 10 cycles, 9 rounds of insems and 1 miscarriage. Meanwhile, no joke, all of our friends who were trying to get pregnant around the same time (and there were a lot of us...something about getting our PhDs made us all ready to have babies!) were conceiving on the first try. It was so hard to be simultaneously thrilled for them and then to go home and cry, pout, be angry. When my best friend (who had been diagnosed with all sorts of infertility issues - PCOS, high FSH etc) called to say she was pregnant on the first try both of us laughed and cried at the absurdity of it all (in large part because on paper my partners numbers were *perfect*).
It got to the point where when our friends would start TTC we'd say they weren't going to have any problem, because simply knowing us was a good luck charm.
After several months of this we started to give ourselves a reward as a couple every time we got a BFN - dinner out, a trip to the beach, new placemats. Little stuff. It was just nice to have something to look forward too.
All that is to say, hang in there and you aren't alone.