With my first pregnancy - which I lost at 22 weeks, I had all the symptoms by the book, sore breast, tired, ..... for the following 3 none of them. Only a candida for DS2.
I think tired is a strong symptom!
Go to the GP for a blood test which will confirm pregnancy and the hormones level.
Between DS1 and DS2 , I lost another baby at 16 weeks.
For DS2 I spent the 9 pregnancy months checking my underwear every time I went for a wee.
You can't help being scared of another MS, but you can have a good outcome after one.
Take it easy, slow down on coffee and tea and any other blood thinning food, rest, eat a ton of veggies (so when baby is born he will have a taste for them) and never be afraid to be a bother or ridicule if you think something isn't right.
When I lost my first, I was in hospital bed next to a woman who was bleeding buckets and crying all the time because she had a placenta previa. In my head, I was glad, my case was just cramping. Two days later I lost the baby and that woman ended up with a baby girl months later - we kept in touch at that time.
SO you never know. You feel funny, you see spotting, ask for a visit.
I felt funny and went to the hospital, and the trainee told me with a very serious face " I know what you have, it is called first baby syndrome" and he sent me away. When I woke up one night with contractions and went again, they sent me away telling me to drink camomile tea. The third time, they admitted me and I went later home with no baby.
My point is, reach out, my first baby might have been saved or maybe not, I will never know, but I should have been firmer that something wasn't right.
My best of luck