Orgasms

So my BF and I have been together for 10 months, in the beginning sex wasn't great but was okay, I started excersing like once a week and rode him for the 1st time and I came for the 1st time at 25 years old (from penetration) I cam come when I am playing with my self but not from intercourse until one random day, I steadily did for 2 weeks and now I can't get that amazing feeling again I haven't since about 3 months now and I've stopped excersing not sure if that's why but it's worth mentioning so now what the heck can I do? I NEED TO FEEL THAT AGAIN 😫 It was different than a clitoris stimulating orgasm. I can't explain it.