Sex frecuency issues with my husband

We have been together 11 years so far, he likes sex so much and i like it but not as much as him, he has always been respectful and tender with me regarding this issue but i know that the low frecuency of sexual activity is something that he would like to happen more frecuently. Actually we are having sex every 2 o 3 days, sometimes one in a week, depending on the situation. We have moved from our country to a new one, this migration situation carries a lot of anxiety and i am very stressed about getting a job in a new country...getting all the documents alright, the residence, and all that. In summary, my mind is always somewhere else, and even he is extemely lovely to me and pampering me all the time, i always feel as i have to pay for that "favour" and give him sex as a reward.. its like my mind starts telling me "come on the guy has been lovely with you all day long and comes the night and you cant give him even a decent blowjob? you suck girl". I know he doesnt do all that for sex but i feel like im lacking smth if i dont give it to him.

I dont know what is wrong with me, im young and my husband is handsome and sexy but for somereason i dont want to have sex as frecuently as him and i feel super selfish, so sometimes i do it even if im nor really into the mood, and in the end i have a good time im not gonna lie, but then he starts complaining that the sex is not so good, i guess his expectations about a sex encounter are kinda high, and we have had excellent encounters, in the past we used to be into bdsm and stuff.. but its like lately i dont want to do it..im not feeling sexy or horny or anything. We are being through this migration situation together and still he has this willing to have sex i dont know how he does...sometimes i think it would be better to wait till i got horny but maybe it too weeks or a month..

IDK..