I've been feeling nauseous the past day or two. And I just started having back pains today. I just feel like I could be pregnant. Also I've been very tired lately. But also I'm not sure because my husband and I have been trying for at least 2 months and still nothing. My period is supposed to come on the 9th. I'm not sure when I can test. Would it be the 7th or could I test sooner with these tests?