It should lead to the house's main drain. You may be able to snake it out or you may need to call in a pro. Do the toilet and laundry drain properly?

I just had too! Agree with previous poster, the drain line needs to be cleaned, possibly inspected via a camera. Contact a reputable plumber.

Yes, the toilet and laundry drain properly. if it goes to the main drain then there should be no problem using it for the shower once its up and running right? Thank you go for the info!!

The shower drains into your main drain-- there is a whole network of pipes buried under your slab.

I just bought a house built in 1958 with a similar issue. I called the plumber about snaking/scoping and he said the P-trap (buried under the concrete-- see under your bathroom sink for an example) is probably corroded that any snaking would be be a temporary solution and clogs would keep coming back. He told me he could replace the pipes, but it makes no sense to pay a plumber to dig, and that I should have someone else do the excavation for less money.

I rented a jackhammer, busted out a 3 ft x 3 ft square of the concrete, then used shovel, and once I hit pipe about 3 feet down, a garden trowel to dig out around the pipe and cut out and replaced the pipes myself. The plumber was right, and the P trap was completely clogged and rusty on the inside.

It's a big job, but doesn't require a lot of skill. It will cost a lot (ballpark $5000ish) to have a professional do it, but a seasoned DIYer could tackle it for the cost of the jackhammer rental and the pipes. (Less than $200 all in). Or you could go the hybrid route and get a handyman type to do the excavation and then call a plumber in to replace the pipes (which really, is the easiest part of the job-- could just have the handyman do it at that point).

awesome! thats so helpful, thank you so much for the info. ill oro get a friend to help out and do it the DIY way. Thank you so much again!!