Automatic Transmission feels like as if I was driving manual and clutch slips on 1999 Toyota 4Runner

When I turn from a stop I believe I hear something not catching. This problem just started. It is just like driving a manual transmission with a clutch that is gone. This happens when I am at a stop and then go, once I get going I from anywhere from 20mph-40mph (I have n0t tried pushing it past that)and step on the gas to speed up it has that slipping feel

when is the last time you had it serviced and ck fluid level
Within 2 months. Not sure if it could be a torque converter problem or solenoid issue?
most likely internal clutch issues or converter. how is the fluid level?
Fluid is fine. When I am in reverse I do not have this problem.