are my monthly lenses really monthly?

hi! i switched to monthly lenses 4 days ago after wearing daily lenses for almost 5 years. when they checked my eyes they gave me some trial (?) lenses to wear for around 30 minutes and since everything was fine they told me i can take those lenses home. i thought they were just throw-away lenses but they told me they're also monthly, so i can wear them for 30 days. this makes sense since they wanted to check whether my eye gets irritated from MONTHLY lenses, not just lenses in general. but i am sooo scared that they accidentally gave me daily lenses and i keep wearing them, even though i asked 2 times if i can really reuse these and they said yes. if there are no complications yet after 4 days of wearing them (other than some dryness, but i've always had that) can i be relieved already? or would complications happen later?