Need help understanding

So I have been reading post about spotting with a pinkish look on the toilet paper . I always thought that it ment I would start my period in a couple days but that's hardly ever the case then I got this app and I see people saying that it could be implantation. I had my birth control removed a lil over two weeks ago fromu arm and iv read that I could get regnant right away I still haven't gotten a period . Do you think I can be pregnant ?