So yesterday I drove out to Nampa and my GP was fine until I got to Nampa. Once I got there, the temp gauge started going up a decent amount past 210. Well, the last two weeks or so, the low coolant light randomly comes on and then goes off. I've been full on coolant. Idk why it keeps popping on. The low oil level light came on the other night and I was a bit low on oil so I put some in. Well, it started trying to overheat a bit again this morning when I drove it. I was thinking it was the thermostat so I went and bought a new thermostat and put it in. After I put it in, whenever I start the car now, the engine shakes and chugs and no coolant goes the main radiator hose (normally when the car is running, the hose can't be squished because it's thick from all the fluid running thru but you can squish it now when the car is running). Somehow, the coolant isnt getting to the radiator now. And the overflow tank is pretty flow. All of the coolant t in the overflow tank isn't getting sucked into the radiator either. So I have no idea what's going on. This is really the only major issue I've had with the car. Also, when I started the car after replacing the thermostat and putting everything back together, it smelled really bad of rotten eggs. Any suggestions on what could be the problem?