BJs 🤔🤔

So my boyfriend was like jokingly complaining how I haven't gone down on him in like a month. I am almost 35 weeks pregnant and the heartburn has been real and I really don't feel like puking to give him a blowjob lol so then last night I didn't have heartburn for a change like the first day in a month, I swear. So I pull his pants down and start going at it. He knows I will go until he finished but only lets me go like 6 minutes then stops me to have sex...so like why did he even say anything and seem a little disappointed when he didn't really care?! Lol maybe he knows blowjobs will be the only option soon and wants it to be special? Haha idk beats me. Guys are weird