Can they fire me?

There is really not enough information to make a determination. What you are talking about are potential claims for violation of FMLA, sex...

Do I have grounds to sue for wrongful termination IF this happens to me? Just wanting to know before hand.

That sounds like a violation of the family medical leave act, and maybe the Americans with disabilities act. You should contact a attorney to...

I would go through their appeal process. They might be bias, but you won't know until you try. I don't see a down side to appealing and losing. ...

Does workman's comp disqualify you from Unemployment benefits

No, but there was a lot more you could have added to determine if you can get unemployment benefits. I would need to know how your employment ended...

Would This be a wrongful termination?

It depends on what is the reason you were treated differently. If it is base on race, sex, age, or some other protected category; then you might...

I was fired from my job while off on fmla is this legal

Most likely not. You need to contact an employment lawyer in Mississippi to discuss your case immediately.

Is this a hostile work enviorment?

I don't think that is necessarily a hostile work environment, but you could have a claim for sex discrimination if the women are being paid more...

Is it illgeal to make an employee work a 12 shift leave for five hrs n return to work 10 more hrs n the same day

No. However, you need to look into why you are being treated differently. If it is based on race, sex, age, etc. you may have a claim for...

Can I sue my employer?

You really should have sought legal advice on this issue before you quit. By quitting you have most likely destroyed any potential claim you could...

What type of case will I have due to wrongful termination?

That could depend on why the other employee did not get terminated. If it was because she is a friend of management or had less write ups then...