The red spotting at 4dpo sounds promising! As long as it doesn't get heavy and is just spotting then it very well could be implantation spotting! It should only last a few days at most and I've read somewhere that once the implantation spotting is completely over you may beable to get a positive if you are preggers. To be safe (assuming your spotting doesn't turn in to more than spotting) I would wait until atleast 10dpo if not a little longer. HTH! Good Luck and Baby Dust!
I agree with PP. I wouldn't worry that anything is wrong and I do think that you ovulated.
Relax and wait for your BFP! Let us know :)
Carrie, ttc #2
wife to Alexander
It turned into full blown AF last night.