I can't believe should I test again

Shane
So I've been ttc for 4 months I gave up last month my period is due Monday I was feeling weird... So I decided to take a pregnancy test(clearblue) it said pregnant ?... But I didn't believe it so I had to test two more times one with first response and then with a 99 cent one... I wanna scream for joy but I still think the tests are wrong lol