Lost my virginity with date and came inside her. Worried sick about pregnancy and that I did something wrong

First of all to preface this there I obviously made a whole lot of really stupid decisions
here.

So I (21M) went on a first date with a woman (30F) and we ended up having sex at her place. It was my first time so I was very nervous and unsure of how these things play out. We initially tried to have protected sex, however I couldn’t stay up with the condom and we stopped and kissed/cuddled for a while. Eventually things heated up again and we started having unprotected sex (I know). We hadn’t spoke about birth control at all and I assumed that she must be on the pill the fact she wanted to do it unprotected. Eventually at the end I came inside her having not discussed whether that was ok or not – obviously the expected thing would be to pull out but being so inexperienced I didn’t put this together. As I told her I was cumming she said “not inside” and I immediately pulled out when she said this, but it was too late as I’d already came maybe 75% of the total load.

We spoke about it after and were all good, we ended up cuddling and making out for a couple hours more. I gave her money for a morning-after pill, but now that I’ve read about the side effects of it I feel absolutely awful about putting her through this ordeal. She told me after not to worry about it because it was my first time and not to blame myself.

But knowing that it’s SA to cum in someone non-consensually is making me worried sick. I absolutely didn’t do it as a deliberate violation of what she wanted, I was just stupid and ignorant enough to not think it through and I immediately stopped when she told me to. She isn’t annoyed at me at all and asked to meet again next week, but I feel absolutely awful about it.

Basically I’m asking did I do something really bad as in SA? Is there a high likelihood she will get pregnant even after the emergency birth control? Feel like shit with the pregnancy worries and knowing I’ve put her through such an ordeal. In terms of rationale it was completely down to be being a dumb virgin not knowing what’s ok and what isn’t rather than any malicious desire to overstep the boundaries, but I don’t think that is much of an excuse.

There’s clearly very salient lessons learned here regarding communication and safe sex. But I just wanted to express this and find out if she’s under reacting to it? We had a really amazing time apart from this and she keeps telling me not to worry. What do you guys think?