TTC 3 years w/ irregular cycles

Lindsey • I`m engaged to the love of my life & we are hoping to have a mini us sometime in the very near future.
I've had irregular cycles for about 2 years, after stopping the depo shot (only had 1 shot) & after my cycles started to be every 14 days. March 2014 I started to take Fertilaid, after 3 months, my cycles finally started to be normal (about 27-34 days) in December I was put on metformin to see what it would do for me & after 18 days of taking it, I got AF. I thought maybe it was just trying to set everything or whatever, we'll I thought wrong, since then, my cycles started being every 18 days, 3-19 (yesterday) waaaayyy early in the am I started to spot, hoping it wouldn't get any worse, it did last night. That's 14 days. I'm so tired of it. ): I ordered Fertilaid again & went to the local health foods store & got a bottle of vitex to increase the herbs in Fertilaid, to try & fix it again, but it hasn't worked yet.I have been to the doctor & had my levels tested, testosterone, progesterone, & my thyroids. Everything came back normal. I've had an ultrasound done also to check my ovaries & everything there was fine too. My doctor doesn't want to put me on anything else until it gets straightened out again. We were really hoping that this be our year for it to happen, but so far, it doesn't look like the odds are in our favor. ):Has this happened to anyone else? What did you do for it? & how long did it take to fix & before you got pregnant?