What could this mean?

Yul
Hi, Has anyone had a heavy 2 day period and still be pregnant? My period usually starts of light and build up to heavy lasting 5 days. This month it started heavy and only lasted 2 days, then stopped suddenly. I had no period for a day and then I started spotting watery light redish colour. We are trying to concieve but never had this with my other pregnancys so wondern if this has happened anyone else????