Sorry I dont know if I am in the right place?

Ok well this is going to sound so weird but I have a question.

I stopped the pill last month.
Its been 35 days since my last period. How long should I wait until going and seeing some one about it.

I had some pinkish tinge blood about 2 1/2 weeks ago (i thought it could implantation bleeding)

Blood test on the 17th Feb - NEGATIVE

Heres a theory I have ,
On the 14th Feb (28 days since last period) I had some red spotting that lasted about 5 mins. I had really bad period pain cramps for abot 5 days (thats how long my period usually lasts for)
Does anyone think that it could have been my period but - I just didnt have enough hormones in my body to start a normal period.
I dont know If I can explain exactly what I am trying to say.
Could I say that was my period and start a new cycle or do you think it was just breakthrough bleeding? What about the cramps?