Soy isoflavones and evening primrose oil

Jo • I am a nurse, wife, and mother to one sweet baby girl age 7, and one sweet baby boy age 2, who gained his angel wings on May 18, 2015. We have been trying for #3 since 9/2014. With no luck.
Anyone used these supplements and had success? Just bought them, started the soy today at cd 3, and took the evening primrose oil too. Figured I'd give it a shot. I am miscarrying, Dr said it was just an early miscarriage, passed the sack looking thing yesterday, she told me to count the day I started bleeding although it was a miscarriage, as cd 1 in my cycle, and that there was no issue in me trying again this cycle since I'm not having a d&c. I have a f/u appointment with her in 4 weeks from the day I had the second set of blood work, and found out about the mc. Also the day I started bleeding as well. I'm really hopeful I get a bfp by the next visit. I just started temping this month too, never have before, just always used opks. I'm going to do both this time, temp and opks. Was just curious if anyone used these supplements with success, or not. I already have my appointment set in September if I don't conceive by then, it'll be 1 year by then. Even though I technically conceived in June, it didn't stick. So I'm willing to try anything. I really want this. Especially since we lost our 2 year old son may 18th. Also forgot to mention, hubs also bought vitamins to take as well, he's taking a men's 1 a day multivitamin, vitamin c, and zinc. The multivitamin didn't have very much of the vit c or zinc, which is why he bought the other two and taking them as well. We used preseed last month for the first time too, and going to use it again this month. The opks I bought this time are the clear blue advanced digital, with the low, high, and peak on them. I usually use the answer brand strips. Has anyone used the advanced digital also, and did you like them? Sorry so long, we are just really really wanting another baby, and after ttc #3 for 10 months now, losing our 2 year old in may, and finally conceiving in June, but ending in mc, we are giving up all hope. :( I will be 29 on July 9. And I know the older, the less chance is on your side. Thanks guys. Prayers for all of you like me, who really want that baby, for sticky baby dust to us all. :)