ANSWER:

If you mean you forgot that you were in the state of major ritual impurity and you just took a normal shower to clean and freshen up, all the prayers you had prayed were invalid and you must perform a new ghusul with proper intention and redo these prayers. 

Ghusal e janaba was mandatory but i forgot and did normal ghusal and did faraiz of Wudu at end. Then recalled in office that i had to do ghusal e janab. So guide how to handle such situations and how about praying salah in that situations. Since can not rebath in office.

Prayer, Purity |