No girl, you should be able to switch the time without any problems. I used to take it at noon, but switched to 10 pm. All I can say is that once you switch it, you stay very consistent with it. I kept forgetting about the time change so now I have an alarm that goes off at 10 pm for me. You can still have sex like you are now, just take extra precaution (condoms, etc.) for a few weeks, so your body can adjust to the new time.

good answer.