Pregnancy depression

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I am 16 weeks pregnant now and experiencing frequent crying for no reason over little things. Honestly I am sad at times and wish I could be happier about being pregnant but I have a lot of things on my mind that i am thinking about since this is my first but.... I don’t wanna be depressed my doctor says I show signs and will be on watch from now on. I just want to enjoy the 2nd TRIMESTER 🤰🤰🤰🤰 I prayed for this pregnancy and now it’s here any suggestions ladies can anyone relate or help me with this

Also my birthday is Sunday but I lotteries because I can’t find anything to do fun and appropriate so I have been sad this week 😢