Just need to vent!

I've been trying to conceive for over 6 months I've quit drinking entirely I've switched my meals so I'm eating more small meals instead of 2 huge ones a day I've been exercising baby dancing on my fertile weeks and still nothing but in those 6 months a few of my friends have accidently gotten pregnant totally out of the blue these are people that smoke and drink and I know at least a few are still smoking while pregnant even one that's in her third trimester still smoking! I'm just frustrated that they got pregnant so easy and I'm over here changing and trying to be healthy and prepared and I still can't even though I'm trying!