not really general pregnancy but.. did i cook this right?

i’ve never made tacos before until tonight. i followed the instructions on the back of the seasoning packet and saw that it said after the meat is cooked to drain the fat before mixing in the seasoning and water. drain fat? i just mashed 2 hamburger patties up and then when the meat was cooked i added the seasoning and water. is it bad that i didn’t drain anything? i also ate the tacos with tortillas that expired in november, but they’ve been kept in the fridge. is that bad? will any of this make me sick? can it hurt the baby? 18 weeks.