My husband and I did IUI two weeks ago. The doctor put me on progesterone two days after. Ever since taking the progesterone, I've had the following symptoms: swollen breasts, sore nipples, sleepiness and some indigestion. I'm on day 26. I'm noticing that my symptoms are going away.

Now, I'm still sleepy, but my breasts are back to their normal size and my nipples are just a little sore. I'm so sad to think that the IUI didn't work.
Is it still possible that I could be pregnant, even with my symptoms going away?