ttc with pcos!

I have been dealing with pcos for almost 2 years now and aswell trying to fall pregnant. I have this app and another app to track everything! On this app it tells me I'm on cycle day 49 and on the other app it says I'm 18 days late! I'm so confused I know this sounds crazy but help me work this out please 😂  I have a 3 year old son but I never knew I was pregnant with him until I was 21 weeks and 3 days so my question is could I be pregnant? I've been feeling dizzy, random dry reaching moments, not sleeping well, little tingly  in my lower belly and my appetite is threw the roof!! In a way I don't want to take a test because I don't wanna be let down AGAIN. Best advice please ladies and please no negative comments😘