Hi, I Have Been Experiencing Some Symptoms That May Resemble

Hi, I have been experiencing some symptoms that may resemble pregnancy and I am wondering if I could indeed be pregnant. I am 8 DPO. Around 3DPO I started having mild cramps and sharp pains in my vagina and abdomen area. At 4 DPO i had nausea with my cramps. (cramps were off and on but hasn't fully gone away.) 5DPO i wake up to a scratchy throat with no sign of a cold and still crampy. My soar throat went away on its on yesterday and I took a home pregnancy test that was negative. Could I be pregnant and if so, is it too early to test.?