Pregnancy all in my head!?!????!!

So I'm sure I'm pregnant after two postive first response a positive at planned parenthood and a digital postive. My so is in DENIAL!! He talked to his parents and they said it could all be in a girls mind wanting to be pregnant so her mind and body makes her think she is. Mainly because I haven't missed my period yet I took two test on April 20 and that is when it was confirmed too and I took a digital yesterday. According to my last period I'm 3 weeks 6 days and apparently that's to early to fill any thing or even know. His dad is a doctor so he says he is right since I haven't missed a period. That my mind can make me have FOUR positve test.
So should I just go along with him for now I go for an appoint the 28th because I had cramps and spotting two days before first postive. Then I have my confirmation appointment with my ob on May 11. What would you do in this situation?