Suddenly really hungry, sign of pregnancy?


We have been TTC for five months now. We had sex on ovulation day and since then I have been absolutely ravenous! I eat well, drink lots of water and exercise regularly, nothing has changed in respect of going on a diet/exercising more but the last two weeks I have been constantly hungry. Period is due on Saturday. Could this be a sign I’m pregnant or am I just going through a funny phase? 🙈