Haiz, Istihaazah & Nifaas

Q: I get my haidh for 10 days. But I get discharges before and after my haidh. I get discharges before 15 days of tuhr is complete then I get my haidh for 10 days (I bleed for about 5-6 days and I get discharges till the 10th day). After the 10th day I still get discharges. There are few days in between that I don't get discharges but most of the time I get discharges. My question is how do I count my haidh? I was told I have to count 10 days haidh 20 days tuhr  and I must re-calculate from the 1st time I got my haidh as 20 days and 10 days, but as soon as I get a clean tuhr I will get my habit from there. I cannot recall having a clean tuhr. I was also told if I bleed during the 20 days even if it is after 15 days it will not be regarded as haidh but istihazaa. Only after 20 days will my haidh start and it will be for 10 days even if I don't bleed or even if I am clean (no discharge, blood, ect) what is the ruling? Is this 20 days 10 days thing right?

Q: What can a woman can recite during her periods? Can she recite qurani duas? Can she recite duas of prophet ( Sal-Allah ho Ali hay wasalam)? Can I recite la ill aha illa unta subhanaka innii kuntu minuzalemeen during periods? Is there any special permission required to do this dua as I recite it often without wadu (when I'm not in periods) and many times a day without counting. What can we recite when a girls head isn't covered?

Q: In Talim ul Haq Masaail pertaining to ghusal it says If one is in the state of Hadase Akbar or Janaabat then it is not permissible to remove, cut or break any nails or hair from any part of the body.

Is the above correct because in Fatawa books like Ahsanul Fatawa etc its says its disliked or makrooh e tanzihi to remove, cut or break any nails or hair from any part of the body If one is in the state of Hadase Akbar or Janaabat?

Q: Can a woman recite ayate karima during haiz?

Q: I need assistance in calculating which days in cycle are considered isthihaza and which days are considered haidh. My normal habit is tuhr of 18 days, following a haidh of 10 days. Diary for this month follows:

Day 11-spotting began

Day 14-bleeding started

Currently on day 17 and still bleeding

Please advise,really confused with regards to namaaz and other ibadath. 

Q: Is one off bleeding after intercourse regarded as istihaazah?

Q: Can a root canal and capping of teeth be done while a woman is in her menses. What is the ruling in this matter? Or she has to fix the tooth cap after taking a bath from menses?

Q: I want to know about menstruation.

1. Should a girl do prayers or not?
2. If her menses is over while she is in Ramadhaan but however she miss sheri, should the one abstain from drinking and eating or she can continue to eat because she missed out sheri due to her menses.
3. How would I know that it really is my menses because sometimes it is confusing and I myself do not know whether it menses or not. Therefore this creates doubt in myself and I do not know whether to do salaah or not?

Q: 

1. A person who is in haidh, can she write the English translation of the Quran?

2. When she is teaching younger children can she read the words in the ahsanul qawaaid?

Q: One of my friends want to ask about a problem related to her salaah. Her usual periods have always been 7 days max. But now she is using contraceptive pills and due to pills the periods prolonged to 10 days or more (i.e after 7 days not proper bleeding or brown discharge but yellowish or little greenish without becoming clear). She starts salah after 10 days as she had read that 10 days are the max limit. Should she start salaah after 7 days or 10 days as its clearly due to the medication not natural because if she leaves the pill it goes back to 7 days.