Am i overreacting?

So my man is a usmc recruiter..they pull LONG hours..i barely see him...he could be gone from 8am to usually at least 10pm..sometimes later..almost 7days a week..sometimes he might come home early but thats rare..im not usually a stay at home mom but my daughter is now 4 months n ive been at home since before i gave birth..n this is our first time living together..so i cook..clean..take care of baby..sleep when i can...pay the bills..n im currently pregnant again so ive been super moody..well my bf n i planned this trip to see his other daughter for her birthday n it was suppose to just be us n the baby but now he invited his mom n little brother to go..i dont want to tell anyone im pregnant so now i have to watch what i say..plus its now gonna be crowded in the car..every space will be taken up on this 10 hr trip so good luck with me trying to sleep comfortable..his mom n brother argue like siblings..so theres that..plus i just wanted to focus on him n the baby n his daughter..now his time is gonna be pulled all directions..honestly..im very pissed about it n felt he should have asked me..his family isnt my family n idk them that well so now i gotta be on my best behavior instead of being able to let go..this vacation has turned into a nightmare..i told him i didnt want to go n why n he thinks im overreacting...am i?