Haiz, Istihaazah & Nifaas

Will bleeding when taking a contraceptive pill be regarded as haidh?

Q: In sharia, is menstrual bleeding defined as blood that comes from the uterus, regardless of how it was caused? Because the contraceptive pill stops my body’s natural hormones and instead, the bleeding that occurs is caused by the medication and not by my body’s natural processes.

In both cases, the blood is from the uterus, but with the pill it is caused artifically, and without the pill it is caused naturally. So is the blood caused by taking the pill haidh or istihaada?

Seeing a coloured discharge three days before one's haidh

Q: It was the time of my period and I got a peach discharge, it wasn't a dark peach. So I asked my teacher and she said that it is my period. (I don’t get any colour discharge during my tuhur period). so I took it as my period, I never discharged more of this colour, I discharged clear and white. I only started bleeding 3 days after I saw the peach discharge. Please advise whether the 3 days in which I saw nothing was actually my period, or did my period only start when I started bleeding. This happened during Ramadhaan.

Calculating haidh while doing IVF treatment

Q: In regards to my menses, I have a 28 day cycle... give or take. If I wipe and find a little change of colour on the toilet paper, I know I'll get my menses a couple of days later. Unfortunately, at the moment I've been having IVF treatments and I just stopped taking hormone replacement tablets and on to taking my injections, however, the nurse told me that my hormone medication and injections will overlap for 3 days and then I'll get my menses.

Now, this is the part I get confused because, the day she said that, which was a Wednesday, I had a few days before I thought I'd get my period, but on that day she said that, I saw a slight colour change on the toilet paper, anyway I still kept on praying because the day she said I get them was not the day I saw it, as I had a couple of more days before and I'm glad I did continue praying, because every other time I wiped it was clear and this happened to me for a couple of days, but yesterday, there were spots of blood on my underwear so, I washed and still prayed Dhur, but I again saw spots on my fresh underwear after changing them and now it was closer to the time when she said I was suppose to get them so, I didn't pray my maghrib, Isha or today's Fajr and now it's clear again and I've missed 3 salats and I'm upset!

What do I do in this situation and how can I make up these salats?

P.S. I feel if I do pray at the moment, I feel like I'm doing the wrong thing and if I don't pray at the moment, I feel like I'm still doing the wrong thing.