Hitting cervix?

Ray💗

So my boyfriend and I had sex for the first time today. I was a virgin. Honestly the sex was really good and nothing hurt at all until we tried doggy style. At random points I would get a pinching feeling deep in me. I'm wondering if that was him hitting my cervix? If so it was pretty uncomfortable and I want to know if there's a way to avoid that. Should I bend down more? Is he "too big"? It felt great but the pinching would throw me off and start to get annoying so I'd tell him so slow down or stop. Please help lol