#4 IUI failed and now confused/worried

Sh

I had my 4th

IUI

on jan 14 and result was negative.

After that i got my periods on jan 30 and now again i am having light bleeding from last 2 days.Is this normal ? Is this happening as an after effect of

IUI

's as for last 4 months, i was on some medications for

IUI

?

I am facing this for the first time so little confused , what exactly is happening? Should I consult a doctor or wait for few more days ?