implantation

So I am 10 dpo today (on clomid so being monitored) and my progestrone level on day 21 (5dpo) was 23.2. I took a test today but it looks more like an evap line then a line to me on test. I had menstrual like cramps last night and this morning and when the cramps went away early this morning my boobs are sore. could that have been implantation that late? anyone else have this or what were you implantation symptoms and stories! any advice would be helpful!