SO MY QUESTIONS ARE :
1. Is it possible to get signs of pregnancy (fertilisation/implantation) before the date your period is due; such as sore boobs,headaches,tiredness etc ?
Yes, but you can also get these same symptoms from AF arriving
2. Can diarrhoea or any sort of change in stools be an early symptom of pregnancy ? If so, why ?
Could be, I personaly get "loose" stools just from AF arriving every month
3. Is tiredness possible to be a symptom though blood tests show that iron isn't low ? & how ?
I don't know if you could get tiredness this early on....but anything is possible
4. Is it likely that you still could be pregnant despite the fact that you may be experiencing period pains 3/4 days before your period is due ?
On my 3rd son I swore AF was coming any minute with frequent trips to the bathroom with a pad in hand. Even after two very positive tests I still felt as though AF would be there any second even thru to my 2nd month
5. Is it possible that you may be pregnant despite having got a BFN from a HPT taken a day before AF is due ?
Yes
6. And lastly, Is it possible to have ''fake symptoms'' meaning that you may THINK you have the symptoms but it could just be psychological being as you want to be pregnant so much, your mind tells you that you feel nausea or tired etc buts its not actually 'real'??
I def. think so. Happens to me any time I think about it too much. Plus, I just seem to have those time of the months that are just so much worse than others
Hope this helps!!! Good luck