Forced travel suggestion needed

Hi ladies. Im in 1st trimester of pregnancy and my husband wants to travel out of country with me (22 hrs flight international). He says we can travel in 2nd trimester because its safe etc. i do not want to travel because do not want to risk anything for the travel, its my first pregnancy. I also had a bruised tail bone issue and even without pregnancy when i travel my feet swell and i dont feel comfy. I dont want to travel now for that long and risk pregnancy and its even not an emergency. We can go after the baby. But he is forcing it and i dont want to get in a fight at this time because that causes me more stress , because of arguing. He should have understand himself.

Please what should i do so that he understands. Should i lie that doctor told me not travel so cannot go or what should i do? Lie would also be bad. And what if he asks the doctr himself then my lie would get caught. Please suggest something so that he does not argue and understands. I have yet to ask the doctor about travel may be she says its ok to travel not sure. Then what should i do? I tried talking once that can travel later but he starts fighting that everyone travels in 2nd trimester and you are being stubborn blah blah so i keep quiet. So i need a reasonable excuse. The only i can think of is saying doctor said no.

I will update this if any reply is needed.

UPDATE:

Update regarding questions: if i clearly say No. He will not harm or threaten me. He will just lecture me for hours for days and wont speak for days and his behavior would be angry for the next coming weeks until i agree. Wont behave normal with me. Shouting and lecturing me for hours makes me very stressful. I dont want that now being pregnant and risk baby because than i get a panic attack because no one speaks to me that way. So im trying to avoid confrontation. Im just trying to find a logical reason to say No so that there is no point left for him to lecture me that i dont want to go etc. everything else is pretty well in the relationship. Only this is the problem. That why i thought may be i should think a way to avoid confrontation. I have even thought of asking him that he can go alone if he wants but i know he wont leave me alone because of care. My mom and his mom (our families live there where he wants to go and his mom is forcing him to come and giving him anxiety which is then taken out on me. She wont understand, she asks daily when are you coming. I just feel may be he wants to make her happy and does not want anxiety because she will then get angry with him. Everything else with him and me is perfectly fine, no issues nothing. And if i speak anything against his mom that would be negative on me too. His mother says she gets tired to travel so she cannot come and you people should come.

I dont have anyone with whom i can stay with. I can stay alone, its fine with me but he wont leave me alone and go by himself because of care that cannot leave me alone in the country when pregnant.