After the back right wheel hopped off a curb the EPC and engine light turned on?

The car was working fine before the incident. The back right wheel hopped off a curb then the EPC immediately came on. Then the engine light came light. The EPC comes and goes but the engine is stays lit. Then a few days ago when I went to turn on the car it started and turned on but then completely shut off after a second of turning it on. The batter light came on with the EPC and the already lit engine light. The only way for the car to work is if I unscrew the connectors to the battery and screw it back on then it’ll work until I turn off the car. I haven’t gone to the mechanic yet because they are booked till next week. What is going on? Literally all of this happened because of that stupid curb. Help please!