I would suggest checking your oil 1st. Next I would purchase a oil pressure switch, & replace it to see if the problems go away. If this does not correct the problem, have it towed somewhere for service. Do not operate the car until this problem goes away. If you can change the oil filter, remove it & cut it open to look for metal shavings. Take pics if needed, & post for help.
I hope it's just a bad switch!