Implantation?

Implantation? Think this is implantation or beginning of period? Have been ttc noticed thick stringy white mucus last night have had barely noticable cramps. Have breast tenderness, fatigue, nausea and headaches.

Update: got a really faint positive today, went to the ob and got a blood test done. Crossing my fingers its positive.

Update: so this happened today.. ❤❤

(Just got back home. It's been on the counter for an hour. Showed positive within the time frame)