For ppl that are ttc does anyone else ever get depressed when u start ur period?

I've been ttc for like 2 yrs now and every month when af comes I get so depressed/stressed out I've cried and think is there something wrong with me I see these ppl get pregant that do drugs while there pregant and it makes me angry like y do they get the chance to have that special moment and they don't even care and I'm over here trying and trying and my S/O tells me not to stress bc it'll make things harder but it's so hard idk what to do