Why do I have spottings, after my monthly period?!

Why do I have spottings, after my monthly period?

I am very much irritated this month, first of all I had been having lots of events in my life. troubles and at work and I got vertigo, low blood, I got sick for a week . I work from 4 pm up to 1 am ( I work in a callcenter). I fall asleep 3 or 4 in the morning and wake up 11 am. Last May 15 I'm suppose to have my period , I got my period May 29 to June 1 and I got spotting June11 then I met with my boy friend June 16, then suddenly to flow maybe I got excited, it stop before having sex, then it continues up to June 22, spotting ( red and brown) started again June 27, I thought it was over but continued, sigh! I was always been irregular because I'm low blood. I know some of you will suggest I have to go a doctor, but I need to know before I go, has anyone else experience this?

3 weeks ago
For a year its been regular except last month and this month. I'm in my 30's and I never have children.

Sometimes stress and being sick can affect your period.
it may take another month to get normal again.
If you are taking birth control, sometimes that happens if you switched brands etc.