So confused

Katie • Married to the man of my dreams💕 have the sweetest baby boys💙

Sooo my husband and I are ttc. And when I didn’t get my period in feb. I for sure thought that was a good sign. I had some spotting at the end of January, but literally it was like a drop a day for 2 days(I have never gotten spotting before in my life). And then nothing. I went to the gyno. She said she wanted me to start on birth control??.... I told her I would rather not and wait to see if my period starts next month. What do you guys think I should do?? I’m now 15 days late for my period in feb. still getting negative tests. But I’m so confused