What's different than ususal

What I have come to realize.... my body may have been going through ..alot of changes.
About three months ago I had experienced pregnancy signs.Sudden tiredness,sensitive to smells,breasts swollen and carved water so much.
I used to have clogs the size of my feet but since I used Fibroid Clear , my cycle have been alot more easier to deal with.So  since everything seem to be normal... then.... is when I tried for the first time ,to actually try to get pregnant.
I thought I could get pregnant ,because in the passed my GYN told me...that I am fertile and could get pregnant easy. So I made some changes to the way I wear my clothes,eating habits,reduce stress level at work and home,slept more and exercised(walking).When I saw spotting..I was upset and disappointed because I made all these changes and only now when I actually want to have a baby.And now, is when I'm going to have diffuclties.
My big belly would last 3 months then ...boom here comes another miscarriage.I just don't get it,is it me or did pick a bad time to start trying.