Week 13.. and brown spotting!!!!!!

I was very busy this past week.. lotsa travelling and handling events.. I was very2 tired but had to keep on going...

So, it was very frightening when yesterday, I discover a big blob of brown spotting on my pantiliner, it is similar to me on my first day of period, it would be some brown spotting before the big rush of period blood.

I was very worried, for my two boys' pregnancy before, I do not have these kind of problem. Am thinking of seeing a doctor tomorrow. From my internet surf, it might be nothing, it might be a sign of threatened abortion. God, please help me and my baby, please.