OMG I'm losing my sanity

So I dont know why this is but for about the past week or so, my 7 month old has been waking up through the night every about 15 to 30 minutes and I dont understand why. He doesn't fully wake up and cry for like food or diaper change but he will half way wake up and start crying and I'm about to go insane. 1) I already dont sleep because I have troubles falling and staying asleep. 2) I dont get sleep bc I'm 6 weeks pregnant 3) I dont get sleep bc my son is waking up so much and I cant figure out why. 😭 my entire family & husband wonder why I'm bitchy af lately but no one understands that I'm up almost all night, every night for the past week or so.