fisting?

Ta

Well it wasn't quite fisting but my husband stuck almost his whole hand inside me up to his thumb and honestly it was one of the best orgasm I have ever had but I have to say I'm scared to try it again of course we used a ton of lube and went slow but the next day I was a little sore and had some light spotting and was worried we did some damage also we are ttc and was also concerned it may affect my ability to get pregnant any one have experience with this or any advise?