More likely you have a broken line that has dropped a bit at the break and is allowing things to hang-up at this point. Most tanks are within ten feet of the house, so it would be easier to check. Look for standing water between the house and tank or a really damp spot. I use a tee handle probe and you can tell when you get to a wet spot.
If you have never made a mistake, you haven't done much.
Our septic tank is buried at least 8 feet and we wouldnt see a wet spot on the ground. We had the ground in our back yard build up alot. Someone told us it is a venting problem. We are very frustrated. we use our electric snake in it every few days and it keeps blocking over and over and it unblocks so easy.
it is not a venting problem. You need to call a septic tank company to come out and pump your tank. While they are at it, they can examine the baffle T and determine if you need a repair. This is not something you can do yourself.