Help!

Ok I'm new here and I'm not sure what to do my husband and i are just starting trying for a baby and i have irregular periods I have taken test after test and I waited 3 weeks before I took one this morning and it was negative. I have had spotting but I'm like 45 days late and I have been a some symptoms that make me think that I'm pregnant but every time I take a test its negative and I feel like I dont know what to do I feel lost kind of I know we started in October so it's still early