12 dpo

So I am 12 dpo today and I am experiencing very light af cramps. They started yesterday during the day. My period is due Thursday. Usually when I get cramps they're heavier and af comes right after (usually in the morning). I never cramp like this. I'm not spotting or anything but I'm a little nervous. Has anyone experienced af cramping that turned into a bfp? I tested last night at 11 dpo and think I saw the faintest of lines. I didn't want to test today but I'm going to test tomorrow morning. Any experience with this?