Don know wat to do

I’m working as a engineer (My job require me to go to site to do testing like walk around & climb ladder). I’m currently less than 3 mth preg..for the past 1 month 2 colleagues from my team left, we only left 3 staffs & have to cover more work now. My boss also promoted me but i didn’t inform him about my pregnancy because that time is less than 3mth. But recent checkup gynae said i do have slight blood clot inside (动胎气) so he increase my duphaston & need to bed rest for 2 days. This is my 2nd pregnancy & is only less than 8mth apart from my 1st one. I don’t know i should inform my boss about it now because 1st: it’s still less than 3 mth, 2nd: we already short of manpower i suppose to help them, but i’m also very worried about my bb. And it’s also like i just came back from my confinement on Feb this yr lol don’t know how should i inform them too..I really don’t know what i should do now..thanks for spending time reading #pleasehelp