4w, backache?

I don't remember having a backache with my first, af was due yesterday (wed), I had a faint positive on a frer Tuesday morning. Tested again today, still very faint positive, was expecting it to be darker but it wasn't. I know I ovulated late, so I should be around 14dpo give or take a day. Anyone else have faint lines multiple days and backache?

Had a small amount of pink spotting yesterday afternoon as well, figure implantation. No bleeding since. Planning on testing again this weekend, see if the line gets any darker. Either way, drs appointment on the 23rd, fingers crossed.

Funny how each time can be totally different and cause you different worries. :-P