Advice please!!

Maddy

I've been ttc for over a year 1/2. I haven't had my period since June . And I've been testing and testing and I know it should have shown up on a test by now. But I just can't help it. Anyway I was wondering should I get a blood test done? Or am I just out? Someone please answer lol!! I really am stuck and don't know what to do. I've never gotten a blood test for other reasons but if you guys think I should I definitely will!!