Hi, I'm 21 weeks and 3 days pregnant. My second pregnancy. I have a low lying placenta and have had problems this whole pregnancy. Is it normal to start losing your mucus plug and start having braxton hicks at 14 weeks? Also my vagina/clit/labia(all of it really) is SORE and just feels weird and maybe even swollen, is that normal this early? I had headaches, nausea, blurry/shakey vision, and weakness from 5weeks-19 weeks. What's wrong with me?