was i oding on 40mg oxy ?

so recently i started getting into oxy. i know, i know not the best decision. i started off by trying two rp 10s which i didnt feel. i thought maybe i just have a naturally higher tolerance to opioids, even mixed in a little kratom to try and boost any effects. about two weeks later, (last night) i received an order, i got some mundiphara oc 80s. i wasn’t planning on taking damn 40mg of if but i split it in half, than split it again so i had 4 20mg peices. i took 20mg orally, and waited about 30/45 minutes. i didn’t feel any very noticeable effects so i decided to crush up the other 20mg half and snort untill i felt desired effect. long story short i snorted the whole other 20mg so i was a total of 40mg deep. i’m not quite sure how to explain the feeling, i felt a little euphoric and very droswy. i was so tired i could barely keep my eyes open. eventually i got really nauseous and it was a little harder to breath, ended up chugging water and throwing it all up which made me feel a bit better but my breath still felt very shallow which made my anxiety turn up a bit. i tried to stay up as long as i possibly could because i was paranoid and didn’t wanna have to have someone take me to the er, i read oxy ods arnt necessarily fast and sometimes take 1-3 hours so i was getting a bit paranoid. i eventually fell asleep and woke back up. i honestly dont think this was an overdose, definitely a bit too much, but i wanna hear some other peoples opinions. should i just completely stop even trying with oxy? or should i just find a better dose ?