hi,I'm 27, sexualy active, i don't use any contraception. My cycle is normally quite short, around 23-25 days, especially in the summer when it's also quite light. Now my period was 8 days late, i've been experiencing very strange feelings, fatigue, mood swinging. I tested pregnancy after 6 days from the due date of my period and its turned negative. My period came 8 days late from the due date, and it's really different than normal, Its very dark and dense black/brown blood clots without blood that i usually don't have. Even I am not feeling to use pad also. that blood clots came while releasing urine.

Please let me know, what should i do?