Stricture Symptoms (Episodically?)

I had gastric sleeve surgery on 11/18/16. I was 238 on surgery date and I'm 179 now.

Periodically, I've had symptoms that seem like a stricture. Somewhat randomly, I'll feel like food gets stuck at the bottom of my throat, and I get nausea and feel really full after only one bite of food. This started happening about 6 weeks post-op, and I called my surgeon and they recommended I go back to softer foods, and come in if it didn't get better. Well, it got better, so I didn't worry about it. However, it has recurred a few times a month since then but only for a few hours or a day or two at a time, then it goes away.

In the last few days, I've felt like a heaviness or lump in the bottom of my throat. For example, I have to take several pill tablets every morning, and when I swallow the pills, it feels like they can get stuck at the bottom of my throat until I wash them down with water. Same with food of any type (With the exception of hard candy which is just sugar crystals).

Since a stricture is scar tissue, I can't imagine it makes sense that it would be episodic, but I'm wondering if anyone has had these symptoms or knows what they could be.