Have major food cravings

Ashley
We have are ttc our 4th baby and ive been taking prenatal pills for about a month in a half now. And for about a month ive been craving beef lo mein and general tos chicken together. I mean like mixed together. I know im werid. But thats all ive wanted to eat for breakfast, lunch, and dinner. Ive not wanted to eat anything else. Anyone have any ideas as to what this could be from?