Af due today, negative test

So I've been ttc for about 4 months now. My cycles have just become regular and af was due today. I've had a lot of clear, jelly like cm the past two days and lotiony before that after ovulating. I had sex the day before expected ovulation and every few days since. My breasts seem to be a bit swollen the past couple days and I've had the "letdown" feeling quite a bit. No bloating or cramping like I should be at this time. I took a first signal test with fmu and it was a clear negative. Could I still be pregnant?