I don’t know what’s going on.

So, I started Clomid on January 6th. I was supposed to start my period on January 26th. On the 30th I started some light spotting, and something close to a very light period started on the first, lasted a day and a half and then another day of light spotting. I’ve taken a couple pregnancy tests, but they’ve all been negative. My period is very regular. I normally have a steady flow for 4 days. This happen to anyone else?