Ive planned for pregnancy and expecting periods tomorrow. But instead of missing period, today that is one day before expected period, I'm noticing light red coloured little blood clots since morning. I have put on Pad but nothing on it. Only when I go to pee, one clot falls off in the toilet. Also having little cramps and lower back pain. Completed 13 days after ovulation. Can I test pregnancy tomorrow then? Or shall I consider this as period or shall I consider it miscarriage?