Could I be pregnant

I had my last AF from the 31 to 3 September. I took clomid for the 4th time from day 3, I was ment to ovulate from the 9th to the 16th of September. My partner and I BD on the 11, 12, 14, 17, 18. On the 28 and 29th a few days before AF was due I had light brown spotting. My breast are feeling very sore and nipples as well. AF was due around the 2/3 and she still hasn't showed. We've been trying for about 20 months, I'm too scared to test. Could this be it?