couple things, the simplest would be for you to have a cleansing bath in sea salt, visualize the water as white light as you sit in the tub, feel/visualize the water as you pour it over yourself washing away black light [kind of like tar] when you feel it's all gone, pull the plug and let the water flow down the drain taking the negative energy and curse with it. [some people get out of the tu, others stay in, your choice.]
next, get sage smudge and sage your whole house, letting the smoke get into every nook and cranny, all the while saying a chant [something like 'i expel all negative energy from my home here, only positive light may roam' or something similar] make sure all the doors and windows are open so the curse may leave. once you're done, shut the doors and windows, sprinkle some sea salt on the windowsills and doorway.
third, make a protection charm and hang it in your house [over the doorway entering the house is a good place] do a protection spell on every member of your family, and once you become pregnant, look for a safe pregnancy spell to protect against miscarrying.
that's the simplest way i know of getting rid of one. there's other things you can try if you want though.