Ok so it's been 46 days since my last period. I'm not even sure if it was my period! I'm really scared about decidual bleeding.

- So last month around Feb 10 my boyfriend and I were rubbing our naked genitals together. I'm aware that it's unlikely, but still possible to become pregnant from that.
I got my period the 23rd that same month.
Since then, we had no direct contact between penis and vagina. Either dry humping (clothes on) or when one has pants off, the other keeps their pants on. And no touching my vagina after touching his penis.

It's already day 46, but I havent had my period yet.
Yes Ive been stressed out greatly from balancing my new job and school, and also financial issues.
I have been drinking Bawls (funny name right?), a 10 fl oz high caffeine guarana energy drink (very tasty but addicting), before I go to work (about 2 or 3 days a week) for about a month now.

I took 2 home pregnancy tests last week. Monday and Thursday. Both negative.

There seems to be a lack or absence of any symptoms except the effects from the caffeine.

If I were pregnant, wouldnt the tests detect pregnancy already? You know, considering the timing of it all. Or do you suppose if I were, my hCG levels arent high enough to be detected yet?