Male, I had my first time, couldn't cum

I had sex for the first time yesterday, I didn't feel anything.
I'm a male, last year in April a girl jerked me off a few times over a week or so. Each time I would come quickly, infact one time all she did was held it and I came.
I had no sexual activities since then until yesterday. My girlfriend started to jerk me off and it felt odd but good ish. After about ten mins she licked it but I didn't even feel her licking it. Then she put it in her mouth and started sucking on it, on point she even chocked as she tried to put it in more. I had little sensation through the oral sex and didn't come.
She then asked if I wanted sex and I said yes, we had sex for about 20 mins, she climaxed but I didn't. I didn't even feel a thing at most times...

When I got home, I had a wank and my sperm was watery first then very very thick.

The whole situation feels odd to me, is this normal? Is something broken inside me ? Something stopping me to come with her?

Also, we used no condom, we have both never had sex with anyone else too.