Pregnancy Info HOME

Okay, so I came off the pill 1 month and 3 weeks ago, I am now 3 weeks late, I took a pregnancy test on the day my period was due and exactly 2 weeks later but both were negative. I haven't had s_x since i've come off he pill, the last time I had s_x it was 13 weeks ago. Surely by taking a hpt now it would show up as i'd be at least 3 months pregnant? I've also experienced symptoms of pregnancy or can these be symptoms of coming off the pill. I've felt sick a few times in the morning, excessive discarge, i'm bloated and i've definately put on weight around my abdomen. I was only on the pill for 3 months if that helps, so surely it wouldn't have a major effect as i've been on other pills for 3 months at a time before and it has never effected me this much. Should I get a blood test at my doctors to make sure? Thanks so much for reading this, any help would be much appreciated!