vagina swollen shut

I think my vagina is swollen shut. It felt like I had something in it so I know TMI but I stuck my finger in there. And normally it's not that hard to get a finger in there but it feels like the inside of it is swollen and i have to SHOVE my finger in there and the walls feel puffy? It was abnormally tight and I mean I'm not like a gaping black hole but I'm about average when it comes to vaginas? Anywho
I've been doing a 3 day monistat treatment because I had/have a yeast infection. I've had a few before and I know what's up and I am on day 2. I'm no longer have the side effects of the yeast infection however my vagina is swelled up so much that it feels like something is in it. 
Do you think I could be having an allergic reaction to monistat? Also I have no pain.