Welcome!!!! I know you.

Sorry you find yourself trying for so long, but glad you joined us!
I was on Depo for 5 years and OMG it was terrible!!! I went off for one year, back on for 6 months, but got pg in the 4th month! (I'd had some serious IV antibiotics right before and my progesterone could have been low--between the 2, the antibs lowering the effectiveness and increased prog., I was actually in a "good" position for pregnancy, perhaps!)
Good luck! 2 periods a year would seem like heaven any other time except when you're TTC, huh? I hate to wish it on you, but here's hoping for at least 12 a year!