She got a yellowish discharge after forty days of nifaas; can she pray and fast?

No File Exists
Check below answers in case you are looking for other related questions:
If a woman’s period ends before Fajr
He had intercourse with his wife when she was menstruating and was unaware of the shar’i ruling

No File Exists
Related Answers:
She saw a brownish discharge on the day after her had period ended and she had done ghusl, and she did not pay any attention to it, then she did another ghusl, and now she is not sure whether her ghusl and prayer were valid
Her period became longer because of the IUD
Seeing drops of blood after doing ghusl following menstruation
If a woman’s period ends before Fajr
He had intercourse with his wife when she was menstruating and was unaware of the shar’i ruling

Recommended answers for you:
The ‘iddah of a woman divorced by talaaq
Baseless objection to the idea that stopping eating before Fajr is an innovation (bid’ah)
The way to a good end
Dreams and dream interpretation
Why should the wife obey her husband?