I have the flu and since I been sick my period seems to be light but all I have been doing basically is laying around. If I get up and walk around sum etc the flow gets a little bit heavier. Still not much on pad but a decent amount wen I wipe. Tmi sorry but I have had fever that's high and I took a preg test 2 days before my period it was neg. could the flu effect ur period? Normally my cycle is a medium to heavy what coul be going on could I be preg?