Almost Given Up On Trying To Have An ! Help!?

I've only had one and that was a year and a half ago (orally). I've tried everything possible to have one again and it doesn't seem to happen! I get to the "hypertonicity" stage---build-up stage---but can never go over the edge. I was in between switching birth controls when I had the , and I read that certain birth controls can prevent you from having one. Do you think that's possible? -I've used toys, self-stimulation, etc etc. The list goes on and on. I try not to think too much about having one while I'm in the moment but it gets kinda hard cause it's been so long! My husband has been very patient with me, but I'm getting VERY ually frustrated and we're starting to fight more about it. Help please....