is it all in my head or could it be...

First of all I experienced 2 periods in June of this year. My next period was July 26th 2012. All normal periods after experiencing 2 miscarriages. With the exception of my July cycle started with 2 days of light spotting and it was a 5 day period (kinda short). Almost 2 wks after my July period I was still bloated. That was one sign that has me wondering if I am with child. I constantly have a dull headache all the time. I feel lower back pain. I feel stomach cramps like a period. Dull sharp pain in my pelvic area that only last a few min at a time. Some nausea. Nose bleeds and I think from what I read online pregnancy rhinitis. I am sneezing non stop stuffy and congested with a runny nose. But it only last a day or 2. Which I am terrified to take anything for because of the 2 miscarriages I had. I have gained some extra lbs and am starting to eat weird. I took 2 hpt that were both neg. I believe I took them to early. I took them a week after my period in July. I will wait to take another one in about 2 wks when my period is due. Grateful for advice thank u