[Deriksnowy]

For some background, I'm almost 18 years old and I've had my period since I was 13.

I'll start with three weeks ago.
It was the only time I ever had gotten intimate with my (now ex) boyfriend between then and the present. To spare from details, only hands were used and his hands did NOT have any sperm on them when he touched me.
Fast forwarding to now, I am supposed to get my period soon (if not now, I have an incredibly irregular period), and I have never had any weird complications with it. If I had cramps, blood would be seconds behind it. But, I had cramps today and no blood.
It's been over 2 hours, and I took medication for the cramps so they're gone, but still no blood.
I'm starting to get worried. Could I possibly have gotten pregnant? Is there something wrong with me? Is this normal?