Baba #2

15 weeks pregnant with baby number 2. Feeling different to first one. Although I'm at risk of early labour as I went into labour at 28 weeks with my first and kept stopping and starting until 36 weeks and I was in slow labour for a week. Although past few days I have been feeling very run down, pains in my belly and a headache that you'd think it's going bust through to the outside of your skull I don't wanna be a pain to the midwife. Any ideas what it could be or I'm just getting a bug