I think it does sound odd. It reminds me of late last year, when I thought my partner was clean having had a “slip” he told me was under control in June, he went to doctors for something and came home with an anxiety medication claiming he had no idea why the doctor had gave him it. Looking back he must have been sitting there rattling while coked up and she’s mistook it for anxiety and nerves! I found out a month later he’d been hiding his growing addiction from me and had blown thousands we had in savings to floor our new house.
Addicts learn to become very good liars and they are very manipulative, so it’s hard to know what to believe. I started to tell myself I was just paranoid when I should have listened to my gut all along. It’s so hard to know what to do as maybe he has managed to do it on his own, but trust your instincts x