Anyone had a blood Hcg test?

I go tomorrow for a Hcg blood test. what is considered a positive? Like, what is your hcg normally at? I'm on the IUD and my OB is almost positive that I'm pregnant. To be honest I kind of hope I am. My husband says we're done forever and I feel if I don't get my "Suprise" baby now, I'll never get another. Please don't judge me. I'll honestly be okay with the results either way. I've just never had this done before so I don't know what to expect. I've already had some super faint positive tests and my period is late among other pregnancy symptoms🙃 Any input would be great TIA❤