I'm freaking out ! Someone help

Ok so I went and did some searching on the internet and now I'm kicking myself in the ass for it cause now I'm freaking out !!

My 1st blood test I did at the doctors was Hcg 343 (less than sign)5 IU/L

I also took a second one 4 days after that but I have not seen the results for that one , (basically in this letter with the results , the doctor asked to see me with in 7 days ) but anyways , I searched up my IU/L , and it is telling me that a (less than sign) 5 IU/L is a non pregnant level ? Has anyone else experienced this ? Maybe I’m just being stupid and just not understanding this ...

I have take 7 or 8 pregnancy test , all positive. My first one was 7 days before my expected period .. I’ve passed my period , got all the symptoms such as tender breasts..