I Have Been Having Pregnancy Symptoms And I Was Days

I have been having pregnancy symptoms and I was days late then I started bleeding but it has not been regular the first days are usually light but this time it was light and then it has been medium the whole time and usually the second day is really heavy and I usually have clots but I don't .. now sometimes its brownish pink and then it starts to bleed .. my periods are very regular so could I be pregnant or
something else?