Light pink or brown mucus spotting with cramps during early pregnancy?

i am ttc and have been having the brown/pink mucus for a few days..it could be a couple of things but im hoping mine is implantation bleeding. this occures 7-14dpo or around the time your period is due. it could also be an infection , ive also read that ppl have this and had a cist on or around overy but dont worry unless its bright red (fresh blood) abit like a period (if it is red see your gp). old blood is brown and is not realy a cause for concern. please let me know if this helps and if you are pg x