Opinions please!

Kira

Help ladies. My SO and I have been ttc and I am now two days past the start of my period. I took a test this morning but it was negative. I have had tender breasts now for five days now. Can’t make it through most days without a nap or going to bed early. Been using the restroom more than normal. Have had a slight headache off and on for about four days. Could I be pregnant and the test just not be picking it up? Has anyone else experienced missing a period with a negative test result and still be pregnant? With my first I was 8 weeks pregnant before I found out so finding out this early is new to me. TIA