Ttc for too long

Been ttc to conceive for about 7 months now after we had a miscarriage .the more and more i try the more and more I get disappointed in my self ... waiting 2 weeks now but I feel like my period coming and every time I explain the disappointment to my boyfriend he just don’t get it .... I’ve been praying taking about 100 vitamins...tryed preseed everything and still nothing I guess we shale see about this month but honestly not feeling any more...... when should I call the doctor?? And what’s ur story’s???