Long post..

So I was on birth control (pill) for about three months. I had the stomach flu in December and threw up a pill therefore started a period. That was December 4th. Finished that pack of BC and didn't have a period on my period pills but I just figured because I bled earlier from throwing a pill up it was normal. I started having pregnancy symptoms in the middle of January so I stopped taking my birth control all together and never got a period. Went to the doctors office and both a urine test and blood test came back negative for HCG. Well now its been 62 days since December 4th period and I haven't had any period. What the hell is going on?? I've never had an irregular cycle and I feel pressure down in my lower stomach. I have a two year old and I remember how I felt at the beginning of that pregnancy (that's why I thought I was pregnant) I'm so confused!!!