Toddler Sleep Regression

Anyone 1.5 year old toddler having a hard time sleeping at night? This just started couple weeks ago and he wakes up looking for me multiple times a night. Idk if his adenoid surgery had anything to do with is last week or the fact that I’m pregnant or it’s just a phase. It’s hard enough to sleep going into the 3rd trimester this weekend on top of him waking up crying.