I Have Been Taking Contraceptive Pills For About 1 And

I have been taking contraceptive pills for about 1 and half year after my first baby..
I had very bad reactions recently after changing tablets so I totally skip the pill now..
I had my last menses after stopping the new pack of generatab that's on around 23-27dec 15 approx
Now I'm not having my menses I had stringy discharge with brownish and even red tinge of blood...but no menses uptil now..I checked the p.test but its negative ..what should I do