Is it true? *Update

Weird question. Is it true that if you "baby danced" the night before and took a PT in the morning after, you would get a negative result even if you were pregnant? I know it sounds weird. I just heard it from a friend and said that the results would be more accurate if you took the PT after 2 weeks of NO "baby dancing." #NOHATE

*Update: Im 12days late according to eve. But i havent done any tests yet. And i recently just had sex. Thats what i meant. Sorry for any confusions. So would having sex the night before doing a test mess up the results?