Tried getting some!

URGH! I'm just doomed when it comes to sex! 
I'm 32 weeks pregnant, my ex left me at 8 weeks (although we did have sex after we broke up) I haven't gotten any in a good 3-4 months! 
Anywho, I've had a FWB kind of thing with one guy for 4 years on and off... He recently broke up with his girlfriend again. 
Made plans for tonight. 
Manage to navigate my way down there to shave and get all nice and clean, shave my forest legs etc! 
I get there, and it's kind of awkward, only ever done anything twice, mostly just talk. 
We get to his room, we talk for a bit. We get started, give him some "porn star quality" head. Make him finish. Life's great so far. We talk a bit. 
Things get heated, one thing leads to another. We're going at it, and boom, his phone goes off, it's his mom saying she's on her way. (he's in training for the military only home for Christmas)...
I GOT A WHOLE 5 MINUTES 😡 
Just wanna get some!!!