Haiz, Istihaazah & Nifaas

Yellow discharge after haidh

Q: I get my haidh for seven days every month but on the 8th day and sometimes on the 9th day I see a yellow discharge. I am not sure whether to consider this as haidh or not because I experience discharge during my clean days sometimes its clear and sometimes it's yellow.

Ghusal on the 10th day after haidh

Q: If a girl got her periods on Saturday morning 11 am- 12pm and on the tenth day which is Tuesday morning her periods end.

1. Can she perform ghusl after fajr or is it necessary to perform ghusl sharp at 11 am?

2. Can the ghusl be performed at any time after fajr or whats the shariah rule regarding it? If the girl wants to fast on Tuesday, can she bath after fajr and keep the nafl fast?

Spotting in the haidh period

Q: My haiz cycle is normally 9-10 days. However my last haiz cycle before Ramadhaan was 7 days complete. During Ramadhaan my haiz stopped on the 8th day and after ghusl I continued my salaah. Then it started again after 3/4 salaah times. This continued till the 10th day. Always there will be hours of no haiz. I kept making ghusl as I did not wish to make my salaah qaza. On the morning of the 10th day I again made ghusl as I was clean the whole night. However 2 hours later I saw a small blood dot (smaller than a mustard seed). Honestly I was tired at this point and ignored it. The rest of the day was clear and the 240 hours complete. Now thinking back I am not sure I made the right decision to ignore it. Was I wrong? What do I do? And what of my salaah and fasts. 

Seeing brown discharge after the days of haidh

Q: My last haiz (or what I considered my haiz) was June 28 - July 4 and remained a brown colour throughout. It looked like discharge and for 1 or 2 days had red streaks of blood. Then it continued as brown discharge/ blood , im not sure. Today (July 15) I have got the same brown discharge / blood. But I have not had a 15 day gap of purity so I have continued to pray as I think I have istihaza.

1. Am I right in thinking I should be praying now?

2. Should I have prayed during the first time I experienced the brown discharge / blood

3. I have read online that there must be a 15 day or 10 day gap of purity - I would like to know where the evidence for this is.

4. I also heard the ruling for istihazah is to clean with instinja, I do this but still blood remains, so I pray anyways. Is my prayer valid or must I repeat them once I am pure?