Anyone help?!?

I had a miscarriage in March and have been TTC ever since then, my periods are irregular.. Example, after the miscarriage my periods would be 31 days apart, then in July - sept it was 29-28.. So I figured everything was getting back to normal, in Oct I got my period 21 days and it lasted for 3 days very light. I thought I was pregnant in November I had nausea, was always tired, boobs hurt, certain smells and food I loved made me feel sick.. But I got my period which was 2 weeks late which put a 39 day period cycle from my oct period... I'm getting really frustrated and I feel like I have no luck.. Idk what to do anymore. I just went to the doctors about a week ago to get blood test for pregancy hormones and other, So I'm just waiting on those..