tired and confused! why is this not happening

Hello .. I am tired I haven't been trying for long according to everyone around me and that's on its own is frustrating. I am a34 years old woman and I have been trying for the past 6 months , but I am beginning to worry I just got my period although I could swear that I had major implantation pains and also spotting prior. I am beginning to lose hope and I don't want to . Everyone says you get pregnant when you don't think about it but how can you not think about it! I am excercising  now and checking ovulation and having Sex regularly yet I am still not pregnant I know this is not new and what I am writing is often discussed but I am for the first time expressing out loud my concerns in a culture that deems this taboo to discuss etc.. how does one check if everything is alright? Should I go check at the doctor? And when is the best time to do so? I am scared life is not easy on me and I worry this is yet another battle to fight