My period did not come out well on march &

Patient: My period did not come out well on march & april it dint come out after 11 days & it is light pink I dint use pad only when I wipe,& I did an ultrasound with a radiologist she said my womb is ok dat I dont hv any infection.now in may I hv not seen it I dont knw what is happening pregnancy test is negative.

Symptoms: Feeling week

Doctor: