I felt "it" and now have very early symptoms

I am dying to tell someone...but I don't want to jinx it. I felt "it" last Thursday. I did insemination Monday Tuesday and Wednesday and Thursday my brain suddenly became aware of the conception. I have had cramps since Tuesday of last week and now I'm nauseous everyday all times of the day. Mild Headache, swollen heavy breasts and occasionally I will feel suddenly really tired. I also feel bloated but surprisingly my pants still fit lol. I want to tell my husband that I'm sure I'm preggers but I feel I need to wait to take the test to confirm. But I feel I know! There is no way I'm am feeling this way because I want to be pregnant. I m just pregnant and I know it. Anyone have any comments or advice. I'm still one week before period is due. I want to test but i m scared to do it too early