After 2 chemical treatments...

I found an adult bug by the end of january, no other signs! I contacted my landlord (i am in Canada so he pays for the treatment) They did the first chemical treatment on February 2 and the second one on February 17 (3 weeks ago) I have been super paranoid and stressed out wether they are gone or not, since I didn't see any other signs I wasn't sure where their nest was... I haven't seen anything in the last 3 weeks, no dead ones, no living ones. I have seen a couple of stains in my pillowcase, but I tried to think it was mascara. I also thought I didn't react to the bites but a couple of minutes ago i started itching in my hand, what looks like a bite 😭 Again tried to inspect and I FIND NOTHING I was thinking about getting a sniffing dog but I am afraid of telling my roomate; she was a bit reluctant during the treatments (no signs on her end either) Any suggestions? Am I being dramatic?