What are my chances of being pregnant?

I'm 2 weeks late and I still didn't get my period I took home pregnancy tests and blood tests but they all came back negative. I'm having signs of being pregnant but I'm still not sure if I am or not cause of the tests. I'm so confused. Can somebody please help me.:(

I am on birth control, yasim. And I forgot to take the last two active pills before the off week, and I had sex, and I"m just wondering if those 2 days off, which put me 2 days behind (as far as getting the hormones in my system)before I could start my next pack, which is today, I was wondering...

I would like to know if I had implantation bleeding. I satrted my monthly on Jan. 2 ended on jan 6. Started brown spotting on jan 8th, which is 2 days after I ended my monthly. And if it is not implantation bleeding, then does implantation bleeding only happen when you ovalate?

I have been on Ortho Tri-Cyclen Lo for 4 months now, last week I forgot to take one active pill from the third week (which would be the last week of the active pills) and I took it either a little less or slightly more than 12 hours later. Following the directions from the pamphlet I took the next...

Could I be pregnant, and if so what are the chances? My period started on the 20th May and lasted till the 26th, I had sex with my boyfriend on the 27th, 28th, 29th 30th, 31st and the 2nd, we did not use contraception and each time he came inside me. What are the chances of me been pregnant? And...