BD after with progesterone suppositories

Manda • Ttc since 2013. Fertility treatments at CNY fertility January 2016. 3 Timed intercourse with letrozole. BFN 1 IUI bfn. IVF 1 transfer BFn 6 frozen. FET#1 2 transfer BFP (2 stuck, 1 split) Triplets BBG
Sooo.. this may be a little tmi. But my hubby and I just did the deed and it burned a little at first. But I just thought oh I'm a little dry and it stopped once we really got going. Well once we were done it started to burn again. Not horrible but almost feel raw down there. I used the restroom and cleaned up afterwards. No funky things going on down there besides this. Anyone know if this is normal? It's been 48 hours since I stopped progesterone. Could it just be that? I saw a few post that it can make your lady bits more sensitive..