could i be pregnant ?

Allison • We have one daughter who is our world! She shines bright!
My period is due to start sept 23. My last period was aug 26. I had sex during my fertile days. I have had extreme symptoms (headache, nausea, light cramping, boob pain) of what i wondered was  pms or pregnancy. I took 2 hpt on the 18th and they were negative. Today, i passed out cold while visiting my grandmother in the hospital. The hospital requested to do a full panel of tests on me. They said my urine test was negative. I didn’t have a specific blood test for hcg, just a normal CBC blood panel. Is there still a chance i could be pregnant?