Period and symptoms after m/c... HELP!

Okay, so I had a miscarriage around Jan 26th. This is my second loss but after my first, I had a D&C, so it was different. So it has been right at a month later. My pregnancy symptoms are long gone, but for the past few days I have been having horrible nausea, tender breasts, sensitivity with scents and tastes.. all much worse than my normal PMS. Normally, when/if I have PMS, it will spike for about 2 days and then fade away. But this has been consistently intense for almost a week. I took a hpt and it was negative. This is so strange to me. Has anyone else experienced crazy hormonal changes about a month after m/c? And when did you start your first period after? I keep expecting mine any day now because of the symptoms but nothing yet.