When I first stopped it was with a 48 mg cartridge. I have no idea how much each cartridge contained (I was in my 7 Eleven days) but used 2 a day. Zero desire to smoke. When I finally figured out there had to be better (and cheaper than those cartridges) I used Tribeca 24 mg in a clearo at 2 ml a day for ~50 mg/day intake (we'll skip how much I actually absorbed and leave it at exposed to). I now vape around 7-8 ml of 6 mg juice a day in a subohm setting, or around 42-48 mg/day, pretty close to where I started. Works for me. I used some 45 mg nic salt in a pod and coughed my lungs out. I find a 12 mg juice works great for me in a pod.
As to the OP, vaping 50 mg salt nic in a DL tank is pretty stupid and is likely the reason for his problem. However, if the OP is a normal size adult they will not be taking in enough nic to do anything more than make them nauseous, headachy, dizzy, and coughing like mad. Which is good, as it's self regulating preventing the OP from taking in anything close to a "fatal" dose of nicotine, short of drinking the damn bottle and even that should be pretty ill but not dead.
Some people do vape 50 mg juice in not necessarily a cloud chasing setup but not a pod because of high tolerance. The OP clearly isn't one of them. They probably got handed a bottle in a smoke shop selling everything else, including cigarettes and told this will work. The OP hopefully now knows that was the wrong advice. And hopefully the OP bothered to read the posts here to understand what they did wrong and correct it. If they didn't I'm sure they stopped vaping altogether by now and decided to go back to cigarettes.