I'm 21 years old in very curious I have been taking geritol since June 16 2013 in July I came on my cycle on tyme but on 08/08/13 things seem different I started bleeding 4 days early than expected bleeding very light in spotty 8/09/13 started bleeding period like not even filling up a whole pad like usual 08/10/13 I was still bleeding extremely light 08/11/13 expected period I was bleeding light barely coming out very little drops a wet red color.08/12/2013 it looked like brown but barely bleeding only when wiped. Me n my mate were about to have sex but be discovered which looked to me as semen like wit a little red mixed in it the clear stuff was stretchy we tried to have sex but when he pulled out it was a little string of blood turning back light after a few minutes than the bleeding stopped completely so I was bleeding for 5 days but was 4 days early I took a hpt today 08/13/13 early this morning which came back negative I don't know what to think me and my mate has been trying for a year after I had a mc 2 years ago.

All advice is welcome because I'm really curious I believe it could have been a early period or implantation bleeding but why a negative hpt please help I'm hoping I am fingers crossed but if not .

08/08/13 started bleeding early
08/11/2013 expected period
08/12/13 bleeding stopped

.I had a little drop of brownish discharge I guess out of nowhere 08/13/13 very unusual but it stopped completely

Nothing unusual at all.
4 days early is nothing.
Light, heavy, spotting, pink, red, brown (brown is just 'old' exposed to air) - all within the norm.
Stringy stuff whether clear or tinged with blood is associated with mid-cycle.
No way to know if you are pregnant or not, but I would guess not. Take another test in about 5 weeks if no period.