My Panda, whose last litter is 13 weeks old... no, I do not let her out, a wild cat let himself in though, twice. 4 days ago she had what I could only explain as bloody show,, a pinkish watery discharge in her birthing bed. I got all of the animals out of the room, made things quiet and peaceful, and still no kittens, She is constantly washing herself and won't leave my side, How long does it usually take after the show to birth? I have had at least 10 litters of kittens throughout my life and this is a new one on me. She is resting peacefully, but I am worried. Any ideas?

Please get this poor cat spayed as soon as you can.

If she is comfortable, I wouldn't worry. I don't understand the "13 weeks" comment. She had kittens 13 weeks ago?

Yes.. she did. And that is why I don't let her out. I support 5 people on $800/month and the Humane Societies around my area want to charge me $85 to fix her. I don't let her out. This wild cat came INTO MY HOME! I keep her shots up, but I don't have the money right now to pay for a spaying or I would. I have always had my animals spayed and neutered. I am a responsible pet owner. Please do not judge me. She is healthy and happy. It wasn't until we were forced into this place that this happened. I have never seen a wild cat just run into someone house before and we didn't catch him until the deed was done. Im devastated.

No, no, no. You misunderstand what I said. I can't figure out, if she had kittens 13 weeks ago, how she is due to have kittens now again? This wild cat impregnated her when?

The wild cat got in twice? I would be a little more watchful and $85 is cheap to get a cat spayed.
I would try to set that money aside as quickly as possible cats can become (as you know) pregnant before or shortly after the previous litter is weaned. You could likely be looking at another litter soon if you don't keep the door closed.
And her health is at risk also if left unspayed, not to mention the risk of feline viruses that the wild cat could be exposing her too.
Please find the funds to do this.
Call around to vet clinics and ask about agencies or rescue groups that help people in your circumstances.
They are out there but you will have to search them out.