Is it normal?

Mhairi • Mum of 2 👩‍👧‍👦 🏴󠁧󠁢󠁳󠁣󠁴󠁿 UK mum

I had my last depo injection in march which ran out 31 may. Since then ive had no periods but opks show im beginning to ovulate. Is it normal to get slowly darker then suddenly lighter then nothing?