Help?!

My fiancé and I have been trying for a baby my doctor said that I have a irregular menstrual cycle and to heighten my chance he prescribed hormone pill (ovulation stimulants) he said to take it for 5 days then try for a week and in 2 weeks I'm either pregnant or my period will come, now I'm in the week where I'm trying with my partner and yesterday I woke up to some spotting it was dark brown and disappeared the next day!! I took a pregnancy 2 days after the spotting and it was negative did I take it to soon or?? Idk what to think I have headaches and fatigue what do u guys think?? 💭

Thank you to anyone who took the time to read and respond❤️ 🙏🏽