New occurrence... Unable to orgasm suddenly. Has this happened to you?

I’m on birth control - have been since December 2017. Recently they just switched my manufacturer almost a month ago, but it’s the same brand (Camila - progestin only/mini pill). I can’t orgasm from anything vaginal, but with clit stimulation I usually can. However, over the past week I haven’t been able to at all from my boyfriend going down on me, when before it wasn’t an issue. No idea what is going on. Could it be from the birth control? Just me maybe being subconsciously a lot more stressed out or depressed than I think I am, or something else? Has this ever happened to you all before/what was the cause if you know? At times it’s difficult even with just me. I hate it, but can’t pin point the reason.