SOMEONE PLEASE HELP :(?

we have been trying to get pregnant for the past 2 months already a year ago i had a miscarriage i was 14 weeks but it took like 10 weeks for me to stop having a period and for a tets to come out positive ..... well now we are trying again i been having my period SOOO irregular it has been going from 33 days to 38 to 32 to 27 to 31 now these past two months i had my period and then 10 days later i had another period like i got it on March 21st to march 25th then April 26throughApril29 then May 10th through May 12 then June 9th through June 12 and now today June 30th i am having a reeeeally light period like peach color and when i pee some kind of skin color stuff comes out it it looks like of when i would pee after i ha the miscarriage last year but this past month i been having like kind of cramping i dont know how to explain the feeling and so bloated nausated and alot of heart burn i took like 4 home pregnancy test and they are all negative so i went to get a blood pregnancy test and negative :'( i dont know what is wrong with me or what can it be someone please help me i am starting to think i am not going to be able to have kids my mom herself had like 4 miscarriages after having me until she was able to have my little brother such a miracle can it be hereditary? can someone please help me give me some advice of yours i am starting to get so depressed :( :(