Possiblity of pregnancy with very few symptoms?

I am on my 3rd month of TTC after a miscarriage. I am currently at 6 days before the wicked witch is supposed to show her ugly face, and I am not feeling very many symptoms (I've heard this is normal) and it makes me feel like my chances of pregnancy are slim to none. Of the symptoms I do have, I am not sure that they are even remotely considered pregnancy symptoms. I have been getting heart burn on and off, I get frequent head aches (1 a day or every other day at the least) and I get mild cramps (nothing like PMS cramps) I also have a heightened sense of smell if that makes any sense and I urinate more frequently without drinking very much. However, my breasts are not sore and that is apparently one of the most common early pregnancy symptoms. I plan on taking a test in the morning with a FRER with my FMU, but I really have doubts that I am pregnant and that makes me feel even more down. My husband and I have wanted nothing more than to become pregnant after our miscarriage, and I feel like I am already out this month. Any advice for me? I really need some advice right now!