Quick question..

India
Is it possible to get your period while pregnant? Idk if im pregnant just yet but my bf came in me and later that same day my period came down while i was at work. Just to give you a better scenerio of where Im at with this question😅 it lasted like 5 days and im now on the 18th day of my cycle and very bloated and my nipples are extremely sore. This usually happens right before AF but its not due for another two weeks so these symptoms are here pretty early. I felt slightly nauseous yesterday and a few days ago some really bad sharp pelvic pain that didnt feel like cramps...help?