Hi I'm 33 weeks on Sunday with my 4th baby, for the last week I've had diareaha, was sick once, had a tiny bit of bright red spotting when I wiped once, dull lower period pain backache, general feeling of not being right, severe sharp pains in groin especially today and a watery light yellow discharge. Saw doctor today she said babies head is 4/5ths palp and gave me a swab to do at home and drop back to them. Also I am on b12 injections, folic acid tablets and iron tablets, not sure what's going on any advice to put my mind at rest please???