I have started suddenly having nose bleed. My Pressure is usually 120/76 and I am usually not stressed when it occurs. Just now i was sitting watching Tv and doing a craft and suddenly I had a nose bleed. Had to change my gown and the blanket I had over my lap. I am on a low dose aspirin for Prevention because of a past history of atrial fib. I am also on tamoxifen. Could this be a side effect?