Feeling psychotic... when does it stop??

I got my surprise positive test on my birthday (9/24). Had a miscarriage the month prior. And now I can’t stop taking pregnancy tests. I am a high risk pregnancy because I have stage 3 kidney disease.

After taking a pregnancy test and see the line getting darker, I feel fine for the rest of that day. However, the next day I have the urge to check again. I have a doctors appointment tomorrow. I feel like once I see the baby on the sonogram I will stop having the urge to take a pregnancy test. Did anybody go through this? I feel psychotic.