TTC and 50 days since last period!!

Brittany
I've been TTC since January, and AF has always been irregular. March I was 43-45 days since last AF and April was normal. This month, I have went 50 days since last AF! Been dizzy, a little nauseous, and increased fatigue. Any possibilities I may be pregnant? I want to hear yalls input before I go buy a test. Thanks!!