Could Zofran, Zoloft, Gabapentin, Mirtazapine, Clonazepam, Famotidine, Omeprazole, Or Estarylla Birth Control Cause False Negative Pregnancy Tests?

My daughter is on several medication and is concerned that one of them may be causing her to get negative results when taking pregnancy tests. She takes zofran, zoloft, gabapentin, mirtazapine,clonzepam, famotidine, omeprazole and estarylla birth control. Could any of these medications cause this to happen.