Hey, I was just wondering about could I maybe possibel be pregnant or is my body playing the biggest trick of it's life?

I have had all the classical symptoms starting from nausea, sore breats, severe fatigue and so forth. Also I have got a faint positive answer from a early detection pregnancy test. However, I've been tested twice in a doctor's office as well and both have came negative (plus all the rest possible conditions that might have caused those and stil the answer comes out negative.)

My doctor has been very very nice to me, and told me it can take up time to find out am I really or not - since it was just the first week of this whole month, when we actually had the multiple intercourse a day time with my bf.

I'm just asking is it possible? I cannot really test by based on missed periods, hence having so long cycles (the mens take place usually after 30-74 days after the latest one.) Just so you know, I'm now had last time my mens 30 days ago, so is it still bit too early to test, when all stuff come still negative, but doctors are pretty convinced there is something based on blood scans and stuff? :S