The first thing you should do IMMEDIATELY is speak to your Personal Tutor, the Programme Administrator and any departmental student support officers. It is essential that the university knows about how you are struggling. Do this rather than waiting for a tutor who may not reply - and to be fair to them, there is only so much they can do to help you (such as sit down and plan a campaign of action, but they can't tell you how to do the assessments).
If the personal circumstances which prevented you from submitting last semester are ongoing, then you should gather evidence for that.
I think once you have done this, you will feel some relief. perhaps then you will be able to start sorting this out.