slight weight loss at end of 2nd trimester?

Co
I started my pregnancy at a healthy weight and didn't gain hardly any weight in 1st trimester - maybe 3 pounds. It really picked up in 2nd trimester and at 25 weeks I had gained 19 pounds. But between 25 and today (26w3) days I've lost about 3 pounds. Has anyone else experienced this? I haven't exercised more, I feel as though I'm eating the same amounts (although last weekend I did eat out a lot since we had family in town) and I'm drinking tons of water just like I have been the whole time. Could it just be I was retaining water? I'll ask my doctor if it doesn't take a turn here in the next couple days. Just wanted to see if anyone else experienced anything similar. Thanks!