SUBREDDIT: r/relationships
TITLE: Me [18F] and my [18M] Boyfriend (9 months) ,had sex for the second time 4 days ago, and now he won't talk to me?
POST: On Thursday my boyfriend and I had sex for the second time ever (we both were virgins prior to the relationship). And since then I haven't gotten a semi-meaningful conversation out of him.

I texted him Friday and Saturday with minimal respone (3-4 text max) and heard nothing from him today or Sunday. This is really unusual for us but at the same time I fee like I may be paranoid/clingy. We've had a rough couple of weeks but everything was going well up until now. 

I'm just not sure if I should be upfront about it or just wait, because honestly right now I feel like crap.
TL;DR: 
My boyfriend is barely speaking, the last time we spoke was when we had sex. Don't know if I'm paranoid/clingy. What do I do next?