Your menstrual cycle doesn't affect implantation bleeding. Implantation bleeding occurs when the fertilized egg attaches itself into the uterine lining (which would confirm pregnancy, but at this time you will not get a positive pregnancy test because you are not far enough along yet).
You don't say how far along you are or how much bleeding. Spotting is not uncommon and especially during implantation. If you are worried and bleed a lot contact your doctor.
That little bleeding was probably implantation bleeding, I would guess you are about 4 weeks pregnant. ~pawsalmighty
At least 3 to 4 months along
Heavy spotting or bleeding. Depends on how far along you are. Consult a doctor!
As far as I know, a light period is just that...a light period. Implantation bleeding usually occurs a couple days before your period is due, and is just spotting, usually pink-ish or light brown in colour.
I was bleeding red blood but then brown blood does that mean I'm having a miscarriage? Ans: Not necessarily, you didn't say how far along you were, but it could be implantation bleeding, irritated cervix (from intercourse, exam, etc) or could be old blood which was in place to protect the pregnancy in it's earliest stages, but the growing uterus expelled it. If you are still worried, go see your doc.
From what I have been reading about implantation bleeding I would say that the dark spotting is that. I would say that you should estimate a week before the dark spotting and that is when you got pregnant.
Hearing starts around 20 weeks.
As far as I am aware you don't feel when implantation takes place.
If you have had a pos test then yes it can be. A good rule is if the blood is brown rarther than red then it's all good so far. I had what i considered a period when i feel pg, and when i went for my first scan i was 15 weeks not 12 as i thourght. Hope this gives you hope. Go to babycenter.co.uk for good advice.