Feeling like a failure

Christine
Hi all. My bf and I have been ttc for four months. I'm due for my period this week and so far, I have all the symptoms that I'm getting it: sore breasts, cramps, headache. I can't help but feel deflated every time I get my period. I've been doing BBT and ovulation tests for the last month. I'm 36 and he's 40. At one point do you think we should go to the dr? 😢