I spotted lightly 2 1/2 weeks ago for a day, than my cycle was due on the 2nd. I am always 28 days regular give or take a day. I don't use birth control. Than I had intercoourse for the first time in a couple weeks and I ihad unusual tenderness during intercours, it wasn't rough sex at all. By the next morning, & days late I have a more than normal heavy flow with bright bright red allmost orange colored blood. I'm very concerned because none of this is normal for me. I almost feel cramping or throbing pressure from the top of my tummy under my ribs. Please give me an idea what's wrong? I eat well and drink plenty of fluids and I am always very aware of my body and I consider myself to be dialed in to what my body tells me. But I don't undersand this... please help!