Please help me diagnose this situation:
2007 Toyota Camry, 4 cyl, automatic transmission, 147k miles. Was driving ab 60mph and slowing down as I approached a red light. Light turned green but car suddenly would not accelerate above about 20mph or 2000 rpm - ran fine as long as I stayed under 20, but when I tried to accelerate beyond that it started lurching like crazy and wouldn’t accelerate. Pulled into a gas station and let it idle for a few mins while I checked the transmission fluid (has had a slow leak but I have been staying pretty on top of the fluid levels). Color and smell of the fluid was fine, but level was just a little low so I added some more fluid and let it cycle thru for a few minutes. Managed to get it home by staying under 20mph. Turned it off and basically ignored it for about 10 days due to being swamped at work. Went to start it up last night and the engine cranks but won’t turn over and start. Lights, etc. all work. What gives? Praying this is not a transmission issue.