How to keep clean with cum gushing out after unprotected sex?

Question

I am personally very much concerned about staying very clean down there. Be it my own vaginal discharge or any other liquid such as cum, I find it annoying if it runs down my legs. 
One reason is that has the potential to ruin clean clothing. The other reason is that I am a Muslim and we have been taught the concepts of cleanliness after sex and periods..to bathe and take a shower to become physically pure (clean) again.
We have been married for 4 years and we have been having protected sex only. It was only until recently that we started planning for a baby and the unprotected sex just makes me uncomfortable afterwards because cum keeps running down my legs..now matter how many times I wash myself. 
The question is: 
How long does cum keep coming out after sex?
And how do I clean up afterwards to avoid the constant cum leakage from my lady parts?

Answer

It is called flow-back. When he ejaculates inside you, it is jelly-like. Due to the heat and acidity of your own fluids, this jelly-like semen liquifies in waves over the next 30 minutes, allowing his sperm to escape in waves and try to make it up your cervix to the fallopian tube, where it will wait for an egg to be released for 3 to 5 days, before dying. What is left in your vagina is a mixture of liquified semen, dead sperm, cervical mucus and your arousal fluid. 
After sex, the blood leaves your genitals and the vaginal walls fold flat on top of each other, slowing down the release of this flow-back fluid. This will just leak out over the next 24 hours, or so.
You can squeeze it out faster by doing Kegel exercises on the toilet. For the rest, a panty liner works well.

Answer

After sex go to the bathroom most of it will come out, (you should pee after sex to reduce the risk of infection) give yourself a clean and use pantyliner to catch any further discharge

Answer

Panty liner

Answer

You can wear a panty liner or a pad to keep it all contained. Sometimes it will come out in little bits and pieces all day depending on how much he ejaculated ￼

Answer

Pee after sex. I rarely get dressed after having sex. I typically put a towel underneath me and sleep either naked or just in a tshirt.

Answer

Keep toilet tissue by the bed to absorb any leakage going down your legs before you get to the toilet.

Answer

I’ve just always gone pee and then showered after. There’s not much after that, and if there is I will physically feel it and use a panty liner. 
After sex, immediately get up and pee, then go stand up in the shower and put a panty liner on after.

Answer

Thank you ladies, your comments were truly insightful!