Hi, I have gone through your complete nicely narrated history and have understood the case.
From your doctor's opinion, it seems that he/she is suspecting loose mouth of the
uterus (incompetent os) due to which you had premature delivery last time. In fact such condition causes premature delivery before 28 weeks. Anyway, you will need a stitch to reinforce the mouth of your uterus.
Before the stitch is put in and even after that also, you are not supposed to lift up heavy weights lest the risk of premature delivery.
Along with incompetent os, you are having another risk factor; i.e.
diabetes. Before you become pregnant, it is highly imperative that you get your diabetes under control. Even then during
pregnancy, it is known to flare up. You will have to be under close supervision of your Obstetrician.
Moreover, your placenta was stuck up in the uterus and had to be removed manually. This is also a very high risk factor. You need to be under the care of a very good obstetrician in a well equipped hospital.
Can you not invite some of your relatives like parents or in-laws to stay with you instead of you traveling all the way, which is not advisable?
Please try to find out a practical solution. Take you care please.