Hello and welcome to HCM,
It becomes difficult to time the ovulation when menstrual cycles are irregular.
Thus, you may take up a urine
pregnancy test to look for pregnancy.
The urine pregnancy test is positive in case conception has taken place.
If the urine pregnancy test is negative, pregnancy is ruled out.
The cramping pain before having sex could be due to onset of
menstruation.
Tenderness of breasts is observed in some women before the onset of periods.
Thus, your history is suggestive of cramping pain, discharge which is white to red followed by bleeding.
This is probably the onset of menstruation.
Irregular menstrual cycles can be regularized with
hormonal treatment.
I suggest you to consult your gynecologist for prescription of suitable drugs for regularizing menstrual cycles.
Thanks and take care
Dr Shailja Puri