needing a lil support

hi, i am 22 yrs old i have 2 daughters 2 and 3 , so after my 2nd child i got the depo shot only once and never again, now she is 2 yrs and 4 months, ok so that be said i have been trying to concieve since jan of this yr, i have normaly regular periods every month i never miss a period, ok so in may 2016 i noticed i had my cycle like every month but it was really heavy not normal i started on may 26 its lasts about 5 1/2 -6 days every month so in june i missed my period about 3 days missed i took a hpt it had a faint pos. i took 5 tests in all none were out of date all different days except 2 all were a faint pos and last night on june 30 i noticed a bit of red blood when i wiped and this morning i am having an odd light bleeding not normal for my cycle when i start usually the next day im bleeding a whole lot. so i want to see if this has happened to anyone else and what do u think i should do  please give honest answers i really wnt to concieve again.  so confused